diff --git a/rootfs/usr/lib/python3.8/lib2to3/Grammar.txt b/rootfs/usr/lib/python3.8/lib2to3/Grammar.txt
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index 0000000..f6c2fc5
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/Grammar.txt
@@ -0,0 +1,196 @@
+# Grammar for 2to3. This grammar supports Python 2.x and 3.x.
+
+# NOTE WELL: You should also follow all the steps listed at
+# https://devguide.python.org/grammar/
+
+# Start symbols for the grammar:
+#	file_input is a module or sequence of commands read from an input file;
+#	single_input is a single interactive statement;
+#	eval_input is the input for the eval() and input() functions.
+# NB: compound_stmt in single_input is followed by extra NEWLINE!
+file_input: (NEWLINE | stmt)* ENDMARKER
+single_input: NEWLINE | simple_stmt | compound_stmt NEWLINE
+eval_input: testlist NEWLINE* ENDMARKER
+
+decorator: '@' dotted_name [ '(' [arglist] ')' ] NEWLINE
+decorators: decorator+
+decorated: decorators (classdef | funcdef | async_funcdef)
+async_funcdef: ASYNC funcdef
+funcdef: 'def' NAME parameters ['->' test] ':' suite
+parameters: '(' [typedargslist] ')'
+
+# The following definition for typedarglist is equivalent to this set of rules:
+#
+#     arguments = argument (',' argument)*
+#     argument = tfpdef ['=' test]
+#     kwargs = '**' tname [',']
+#     args = '*' [tname]
+#     kwonly_kwargs = (',' argument)* [',' [kwargs]]
+#     args_kwonly_kwargs = args kwonly_kwargs | kwargs
+#     poskeyword_args_kwonly_kwargs = arguments [',' [args_kwonly_kwargs]]
+#     typedargslist_no_posonly  = poskeyword_args_kwonly_kwargs | args_kwonly_kwargs
+#     typedarglist = arguments ',' '/' [',' [typedargslist_no_posonly]])|(typedargslist_no_posonly)"
+#
+# It needs to be fully expanded to allow our LL(1) parser to work on it.
+
+typedargslist: tfpdef ['=' test] (',' tfpdef ['=' test])* ',' '/' [
+                     ',' [((tfpdef ['=' test] ',')* ('*' [tname] (',' tname ['=' test])*
+                            [',' ['**' tname [',']]] | '**' tname [','])
+                     | tfpdef ['=' test] (',' tfpdef ['=' test])* [','])]
+                ] | ((tfpdef ['=' test] ',')* ('*' [tname] (',' tname ['=' test])*
+                     [',' ['**' tname [',']]] | '**' tname [','])
+                     | tfpdef ['=' test] (',' tfpdef ['=' test])* [','])
+
+tname: NAME [':' test]
+tfpdef: tname | '(' tfplist ')'
+tfplist: tfpdef (',' tfpdef)* [',']
+
+# The following definition for varargslist is equivalent to this set of rules:
+#
+#     arguments = argument (',' argument )*
+#     argument = vfpdef ['=' test]
+#     kwargs = '**' vname [',']
+#     args = '*' [vname]
+#     kwonly_kwargs = (',' argument )* [',' [kwargs]]
+#     args_kwonly_kwargs = args kwonly_kwargs | kwargs
+#     poskeyword_args_kwonly_kwargs = arguments [',' [args_kwonly_kwargs]]
+#     vararglist_no_posonly = poskeyword_args_kwonly_kwargs | args_kwonly_kwargs
+#     varargslist = arguments ',' '/' [','[(vararglist_no_posonly)]] | (vararglist_no_posonly)
+#
+# It needs to be fully expanded to allow our LL(1) parser to work on it.
+
+varargslist: vfpdef ['=' test ](',' vfpdef ['=' test])* ',' '/' [',' [
+                     ((vfpdef ['=' test] ',')* ('*' [vname] (',' vname ['=' test])*
+                            [',' ['**' vname [',']]] | '**' vname [','])
+                            | vfpdef ['=' test] (',' vfpdef ['=' test])* [','])
+                     ]] | ((vfpdef ['=' test] ',')*
+                     ('*' [vname] (',' vname ['=' test])*  [',' ['**' vname [',']]]| '**' vname [','])
+                     | vfpdef ['=' test] (',' vfpdef ['=' test])* [','])
+
+vname: NAME
+vfpdef: vname | '(' vfplist ')'
+vfplist: vfpdef (',' vfpdef)* [',']
+
+stmt: simple_stmt | compound_stmt
+simple_stmt: small_stmt (';' small_stmt)* [';'] NEWLINE
+small_stmt: (expr_stmt | print_stmt  | del_stmt | pass_stmt | flow_stmt |
+             import_stmt | global_stmt | exec_stmt | assert_stmt)
+expr_stmt: testlist_star_expr (annassign | augassign (yield_expr|testlist) |
+                     ('=' (yield_expr|testlist_star_expr))*)
+annassign: ':' test ['=' test]
+testlist_star_expr: (test|star_expr) (',' (test|star_expr))* [',']
+augassign: ('+=' | '-=' | '*=' | '@=' | '/=' | '%=' | '&=' | '|=' | '^=' |
+            '<<=' | '>>=' | '**=' | '//=')
+# For normal and annotated assignments, additional restrictions enforced by the interpreter
+print_stmt: 'print' ( [ test (',' test)* [','] ] |
+                      '>>' test [ (',' test)+ [','] ] )
+del_stmt: 'del' exprlist
+pass_stmt: 'pass'
+flow_stmt: break_stmt | continue_stmt | return_stmt | raise_stmt | yield_stmt
+break_stmt: 'break'
+continue_stmt: 'continue'
+return_stmt: 'return' [testlist]
+yield_stmt: yield_expr
+raise_stmt: 'raise' [test ['from' test | ',' test [',' test]]]
+import_stmt: import_name | import_from
+import_name: 'import' dotted_as_names
+import_from: ('from' ('.'* dotted_name | '.'+)
+              'import' ('*' | '(' import_as_names ')' | import_as_names))
+import_as_name: NAME ['as' NAME]
+dotted_as_name: dotted_name ['as' NAME]
+import_as_names: import_as_name (',' import_as_name)* [',']
+dotted_as_names: dotted_as_name (',' dotted_as_name)*
+dotted_name: NAME ('.' NAME)*
+global_stmt: ('global' | 'nonlocal') NAME (',' NAME)*
+exec_stmt: 'exec' expr ['in' test [',' test]]
+assert_stmt: 'assert' test [',' test]
+
+compound_stmt: if_stmt | while_stmt | for_stmt | try_stmt | with_stmt | funcdef | classdef | decorated | async_stmt
+async_stmt: ASYNC (funcdef | with_stmt | for_stmt)
+if_stmt: 'if' namedexpr_test ':' suite ('elif' namedexpr_test ':' suite)* ['else' ':' suite]
+while_stmt: 'while' namedexpr_test ':' suite ['else' ':' suite]
+for_stmt: 'for' exprlist 'in' testlist ':' suite ['else' ':' suite]
+try_stmt: ('try' ':' suite
+           ((except_clause ':' suite)+
+	    ['else' ':' suite]
+	    ['finally' ':' suite] |
+	   'finally' ':' suite))
+with_stmt: 'with' with_item (',' with_item)*  ':' suite
+with_item: test ['as' expr]
+with_var: 'as' expr
+# NB compile.c makes sure that the default except clause is last
+except_clause: 'except' [test [(',' | 'as') test]]
+suite: simple_stmt | NEWLINE INDENT stmt+ DEDENT
+
+# Backward compatibility cruft to support:
+# [ x for x in lambda: True, lambda: False if x() ]
+# even while also allowing:
+# lambda x: 5 if x else 2
+# (But not a mix of the two)
+testlist_safe: old_test [(',' old_test)+ [',']]
+old_test: or_test | old_lambdef
+old_lambdef: 'lambda' [varargslist] ':' old_test
+
+namedexpr_test: test [':=' test]
+test: or_test ['if' or_test 'else' test] | lambdef
+or_test: and_test ('or' and_test)*
+and_test: not_test ('and' not_test)*
+not_test: 'not' not_test | comparison
+comparison: expr (comp_op expr)*
+comp_op: '<'|'>'|'=='|'>='|'<='|'<>'|'!='|'in'|'not' 'in'|'is'|'is' 'not'
+star_expr: '*' expr
+expr: xor_expr ('|' xor_expr)*
+xor_expr: and_expr ('^' and_expr)*
+and_expr: shift_expr ('&' shift_expr)*
+shift_expr: arith_expr (('<<'|'>>') arith_expr)*
+arith_expr: term (('+'|'-') term)*
+term: factor (('*'|'@'|'/'|'%'|'//') factor)*
+factor: ('+'|'-'|'~') factor | power
+power: [AWAIT] atom trailer* ['**' factor]
+atom: ('(' [yield_expr|testlist_gexp] ')' |
+       '[' [listmaker] ']' |
+       '{' [dictsetmaker] '}' |
+       '`' testlist1 '`' |
+       NAME | NUMBER | STRING+ | '.' '.' '.')
+listmaker: (namedexpr_test|star_expr) ( comp_for | (',' (namedexpr_test|star_expr))* [','] )
+testlist_gexp: (namedexpr_test|star_expr) ( comp_for | (',' (namedexpr_test|star_expr))* [','] )
+lambdef: 'lambda' [varargslist] ':' test
+trailer: '(' [arglist] ')' | '[' subscriptlist ']' | '.' NAME
+subscriptlist: subscript (',' subscript)* [',']
+subscript: test | [test] ':' [test] [sliceop]
+sliceop: ':' [test]
+exprlist: (expr|star_expr) (',' (expr|star_expr))* [',']
+testlist: test (',' test)* [',']
+dictsetmaker: ( ((test ':' test | '**' expr)
+                 (comp_for | (',' (test ':' test | '**' expr))* [','])) |
+                ((test | star_expr)
+		 (comp_for | (',' (test | star_expr))* [','])) )
+
+classdef: 'class' NAME ['(' [arglist] ')'] ':' suite
+
+arglist: argument (',' argument)* [',']
+
+# "test '=' test" is really "keyword '=' test", but we have no such token.
+# These need to be in a single rule to avoid grammar that is ambiguous
+# to our LL(1) parser. Even though 'test' includes '*expr' in star_expr,
+# we explicitly match '*' here, too, to give it proper precedence.
+# Illegal combinations and orderings are blocked in ast.c:
+# multiple (test comp_for) arguments are blocked; keyword unpackings
+# that precede iterable unpackings are blocked; etc.
+argument: ( test [comp_for] |
+            test ':=' test |
+            test '=' test |
+            '**' test |
+	        '*' test )
+
+comp_iter: comp_for | comp_if
+comp_for: [ASYNC] 'for' exprlist 'in' testlist_safe [comp_iter]
+comp_if: 'if' old_test [comp_iter]
+
+testlist1: test (',' test)*
+
+# not used in grammar, but may appear in "node" passed from Parser to Compiler
+encoding_decl: NAME
+
+yield_expr: 'yield' [yield_arg]
+yield_arg: 'from' test | testlist
diff --git a/rootfs/usr/lib/python3.8/lib2to3/Grammar3.8.11.final.0.pickle b/rootfs/usr/lib/python3.8/lib2to3/Grammar3.8.11.final.0.pickle
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diff --git a/rootfs/usr/lib/python3.8/lib2to3/PatternGrammar.txt b/rootfs/usr/lib/python3.8/lib2to3/PatternGrammar.txt
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+++ b/rootfs/usr/lib/python3.8/lib2to3/PatternGrammar.txt
@@ -0,0 +1,28 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+# A grammar to describe tree matching patterns.
+# Not shown here:
+# - 'TOKEN' stands for any token (leaf node)
+# - 'any' stands for any node (leaf or interior)
+# With 'any' we can still specify the sub-structure.
+
+# The start symbol is 'Matcher'.
+
+Matcher: Alternatives ENDMARKER
+
+Alternatives: Alternative ('|' Alternative)*
+
+Alternative: (Unit | NegatedUnit)+
+
+Unit: [NAME '='] ( STRING [Repeater]
+                 | NAME [Details] [Repeater]
+                 | '(' Alternatives ')' [Repeater]
+                 | '[' Alternatives ']'
+		 )
+
+NegatedUnit: 'not' (STRING | NAME [Details] | '(' Alternatives ')')
+
+Repeater: '*' | '+' | '{' NUMBER [',' NUMBER] '}'
+
+Details: '<' Alternatives '>'
diff --git a/rootfs/usr/lib/python3.8/lib2to3/PatternGrammar3.8.11.final.0.pickle b/rootfs/usr/lib/python3.8/lib2to3/PatternGrammar3.8.11.final.0.pickle
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diff --git a/rootfs/usr/lib/python3.8/lib2to3/__init__.py b/rootfs/usr/lib/python3.8/lib2to3/__init__.py
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--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/__init__.py
@@ -0,0 +1 @@
+#empty
diff --git a/rootfs/usr/lib/python3.8/lib2to3/__main__.py b/rootfs/usr/lib/python3.8/lib2to3/__main__.py
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index 0000000..80688ba
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/__main__.py
@@ -0,0 +1,4 @@
+import sys
+from .main import main
+
+sys.exit(main("lib2to3.fixes"))
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diff --git a/rootfs/usr/lib/python3.8/lib2to3/btm_matcher.py b/rootfs/usr/lib/python3.8/lib2to3/btm_matcher.py
new file mode 100644
index 0000000..3b78868
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/btm_matcher.py
@@ -0,0 +1,163 @@
+"""A bottom-up tree matching algorithm implementation meant to speed
+up 2to3's matching process. After the tree patterns are reduced to
+their rarest linear path, a linear Aho-Corasick automaton is
+created. The linear automaton traverses the linear paths from the
+leaves to the root of the AST and returns a set of nodes for further
+matching. This reduces significantly the number of candidate nodes."""
+
+__author__ = "George Boutsioukis <gboutsioukis@gmail.com>"
+
+import logging
+import itertools
+from collections import defaultdict
+
+from . import pytree
+from .btm_utils import reduce_tree
+
+class BMNode(object):
+    """Class for a node of the Aho-Corasick automaton used in matching"""
+    count = itertools.count()
+    def __init__(self):
+        self.transition_table = {}
+        self.fixers = []
+        self.id = next(BMNode.count)
+        self.content = ''
+
+class BottomMatcher(object):
+    """The main matcher class. After instantiating the patterns should
+    be added using the add_fixer method"""
+
+    def __init__(self):
+        self.match = set()
+        self.root = BMNode()
+        self.nodes = [self.root]
+        self.fixers = []
+        self.logger = logging.getLogger("RefactoringTool")
+
+    def add_fixer(self, fixer):
+        """Reduces a fixer's pattern tree to a linear path and adds it
+        to the matcher(a common Aho-Corasick automaton). The fixer is
+        appended on the matching states and called when they are
+        reached"""
+        self.fixers.append(fixer)
+        tree = reduce_tree(fixer.pattern_tree)
+        linear = tree.get_linear_subpattern()
+        match_nodes = self.add(linear, start=self.root)
+        for match_node in match_nodes:
+            match_node.fixers.append(fixer)
+
+    def add(self, pattern, start):
+        "Recursively adds a linear pattern to the AC automaton"
+        #print("adding pattern", pattern, "to", start)
+        if not pattern:
+            #print("empty pattern")
+            return [start]
+        if isinstance(pattern[0], tuple):
+            #alternatives
+            #print("alternatives")
+            match_nodes = []
+            for alternative in pattern[0]:
+                #add all alternatives, and add the rest of the pattern
+                #to each end node
+                end_nodes = self.add(alternative, start=start)
+                for end in end_nodes:
+                    match_nodes.extend(self.add(pattern[1:], end))
+            return match_nodes
+        else:
+            #single token
+            #not last
+            if pattern[0] not in start.transition_table:
+                #transition did not exist, create new
+                next_node = BMNode()
+                start.transition_table[pattern[0]] = next_node
+            else:
+                #transition exists already, follow
+                next_node = start.transition_table[pattern[0]]
+
+            if pattern[1:]:
+                end_nodes = self.add(pattern[1:], start=next_node)
+            else:
+                end_nodes = [next_node]
+            return end_nodes
+
+    def run(self, leaves):
+        """The main interface with the bottom matcher. The tree is
+        traversed from the bottom using the constructed
+        automaton. Nodes are only checked once as the tree is
+        retraversed. When the automaton fails, we give it one more
+        shot(in case the above tree matches as a whole with the
+        rejected leaf), then we break for the next leaf. There is the
+        special case of multiple arguments(see code comments) where we
+        recheck the nodes
+
+        Args:
+           The leaves of the AST tree to be matched
+
+        Returns:
+           A dictionary of node matches with fixers as the keys
+        """
+        current_ac_node = self.root
+        results = defaultdict(list)
+        for leaf in leaves:
+            current_ast_node = leaf
+            while current_ast_node:
+                current_ast_node.was_checked = True
+                for child in current_ast_node.children:
+                    # multiple statements, recheck
+                    if isinstance(child, pytree.Leaf) and child.value == ";":
+                        current_ast_node.was_checked = False
+                        break
+                if current_ast_node.type == 1:
+                    #name
+                    node_token = current_ast_node.value
+                else:
+                    node_token = current_ast_node.type
+
+                if node_token in current_ac_node.transition_table:
+                    #token matches
+                    current_ac_node = current_ac_node.transition_table[node_token]
+                    for fixer in current_ac_node.fixers:
+                        results[fixer].append(current_ast_node)
+                else:
+                    #matching failed, reset automaton
+                    current_ac_node = self.root
+                    if (current_ast_node.parent is not None
+                        and current_ast_node.parent.was_checked):
+                        #the rest of the tree upwards has been checked, next leaf
+                        break
+
+                    #recheck the rejected node once from the root
+                    if node_token in current_ac_node.transition_table:
+                        #token matches
+                        current_ac_node = current_ac_node.transition_table[node_token]
+                        for fixer in current_ac_node.fixers:
+                            results[fixer].append(current_ast_node)
+
+                current_ast_node = current_ast_node.parent
+        return results
+
+    def print_ac(self):
+        "Prints a graphviz diagram of the BM automaton(for debugging)"
+        print("digraph g{")
+        def print_node(node):
+            for subnode_key in node.transition_table.keys():
+                subnode = node.transition_table[subnode_key]
+                print("%d -> %d [label=%s] //%s" %
+                      (node.id, subnode.id, type_repr(subnode_key), str(subnode.fixers)))
+                if subnode_key == 1:
+                    print(subnode.content)
+                print_node(subnode)
+        print_node(self.root)
+        print("}")
+
+# taken from pytree.py for debugging; only used by print_ac
+_type_reprs = {}
+def type_repr(type_num):
+    global _type_reprs
+    if not _type_reprs:
+        from .pygram import python_symbols
+        # printing tokens is possible but not as useful
+        # from .pgen2 import token // token.__dict__.items():
+        for name, val in python_symbols.__dict__.items():
+            if type(val) == int: _type_reprs[val] = name
+    return _type_reprs.setdefault(type_num, type_num)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/btm_utils.py b/rootfs/usr/lib/python3.8/lib2to3/btm_utils.py
new file mode 100644
index 0000000..ff76ba3
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/btm_utils.py
@@ -0,0 +1,281 @@
+"Utility functions used by the btm_matcher module"
+
+from . import pytree
+from .pgen2 import grammar, token
+from .pygram import pattern_symbols, python_symbols
+
+syms = pattern_symbols
+pysyms = python_symbols
+tokens = grammar.opmap
+token_labels = token
+
+TYPE_ANY = -1
+TYPE_ALTERNATIVES = -2
+TYPE_GROUP = -3
+
+class MinNode(object):
+    """This class serves as an intermediate representation of the
+    pattern tree during the conversion to sets of leaf-to-root
+    subpatterns"""
+
+    def __init__(self, type=None, name=None):
+        self.type = type
+        self.name = name
+        self.children = []
+        self.leaf = False
+        self.parent = None
+        self.alternatives = []
+        self.group = []
+
+    def __repr__(self):
+        return str(self.type) + ' ' + str(self.name)
+
+    def leaf_to_root(self):
+        """Internal method. Returns a characteristic path of the
+        pattern tree. This method must be run for all leaves until the
+        linear subpatterns are merged into a single"""
+        node = self
+        subp = []
+        while node:
+            if node.type == TYPE_ALTERNATIVES:
+                node.alternatives.append(subp)
+                if len(node.alternatives) == len(node.children):
+                    #last alternative
+                    subp = [tuple(node.alternatives)]
+                    node.alternatives = []
+                    node = node.parent
+                    continue
+                else:
+                    node = node.parent
+                    subp = None
+                    break
+
+            if node.type == TYPE_GROUP:
+                node.group.append(subp)
+                #probably should check the number of leaves
+                if len(node.group) == len(node.children):
+                    subp = get_characteristic_subpattern(node.group)
+                    node.group = []
+                    node = node.parent
+                    continue
+                else:
+                    node = node.parent
+                    subp = None
+                    break
+
+            if node.type == token_labels.NAME and node.name:
+                #in case of type=name, use the name instead
+                subp.append(node.name)
+            else:
+                subp.append(node.type)
+
+            node = node.parent
+        return subp
+
+    def get_linear_subpattern(self):
+        """Drives the leaf_to_root method. The reason that
+        leaf_to_root must be run multiple times is because we need to
+        reject 'group' matches; for example the alternative form
+        (a | b c) creates a group [b c] that needs to be matched. Since
+        matching multiple linear patterns overcomes the automaton's
+        capabilities, leaf_to_root merges each group into a single
+        choice based on 'characteristic'ity,
+
+        i.e. (a|b c) -> (a|b) if b more characteristic than c
+
+        Returns: The most 'characteristic'(as defined by
+          get_characteristic_subpattern) path for the compiled pattern
+          tree.
+        """
+
+        for l in self.leaves():
+            subp = l.leaf_to_root()
+            if subp:
+                return subp
+
+    def leaves(self):
+        "Generator that returns the leaves of the tree"
+        for child in self.children:
+            yield from child.leaves()
+        if not self.children:
+            yield self
+
+def reduce_tree(node, parent=None):
+    """
+    Internal function. Reduces a compiled pattern tree to an
+    intermediate representation suitable for feeding the
+    automaton. This also trims off any optional pattern elements(like
+    [a], a*).
+    """
+
+    new_node = None
+    #switch on the node type
+    if node.type == syms.Matcher:
+        #skip
+        node = node.children[0]
+
+    if node.type == syms.Alternatives  :
+        #2 cases
+        if len(node.children) <= 2:
+            #just a single 'Alternative', skip this node
+            new_node = reduce_tree(node.children[0], parent)
+        else:
+            #real alternatives
+            new_node = MinNode(type=TYPE_ALTERNATIVES)
+            #skip odd children('|' tokens)
+            for child in node.children:
+                if node.children.index(child)%2:
+                    continue
+                reduced = reduce_tree(child, new_node)
+                if reduced is not None:
+                    new_node.children.append(reduced)
+    elif node.type == syms.Alternative:
+        if len(node.children) > 1:
+
+            new_node = MinNode(type=TYPE_GROUP)
+            for child in node.children:
+                reduced = reduce_tree(child, new_node)
+                if reduced:
+                    new_node.children.append(reduced)
+            if not new_node.children:
+                # delete the group if all of the children were reduced to None
+                new_node = None
+
+        else:
+            new_node = reduce_tree(node.children[0], parent)
+
+    elif node.type == syms.Unit:
+        if (isinstance(node.children[0], pytree.Leaf) and
+            node.children[0].value == '('):
+            #skip parentheses
+            return reduce_tree(node.children[1], parent)
+        if ((isinstance(node.children[0], pytree.Leaf) and
+               node.children[0].value == '[')
+               or
+               (len(node.children)>1 and
+               hasattr(node.children[1], "value") and
+               node.children[1].value == '[')):
+            #skip whole unit if its optional
+            return None
+
+        leaf = True
+        details_node = None
+        alternatives_node = None
+        has_repeater = False
+        repeater_node = None
+        has_variable_name = False
+
+        for child in node.children:
+            if child.type == syms.Details:
+                leaf = False
+                details_node = child
+            elif child.type == syms.Repeater:
+                has_repeater = True
+                repeater_node = child
+            elif child.type == syms.Alternatives:
+                alternatives_node = child
+            if hasattr(child, 'value') and child.value == '=': # variable name
+                has_variable_name = True
+
+        #skip variable name
+        if has_variable_name:
+            #skip variable name, '='
+            name_leaf = node.children[2]
+            if hasattr(name_leaf, 'value') and name_leaf.value == '(':
+                # skip parenthesis
+                name_leaf = node.children[3]
+        else:
+            name_leaf = node.children[0]
+
+        #set node type
+        if name_leaf.type == token_labels.NAME:
+            #(python) non-name or wildcard
+            if name_leaf.value == 'any':
+                new_node = MinNode(type=TYPE_ANY)
+            else:
+                if hasattr(token_labels, name_leaf.value):
+                    new_node = MinNode(type=getattr(token_labels, name_leaf.value))
+                else:
+                    new_node = MinNode(type=getattr(pysyms, name_leaf.value))
+
+        elif name_leaf.type == token_labels.STRING:
+            #(python) name or character; remove the apostrophes from
+            #the string value
+            name = name_leaf.value.strip("'")
+            if name in tokens:
+                new_node = MinNode(type=tokens[name])
+            else:
+                new_node = MinNode(type=token_labels.NAME, name=name)
+        elif name_leaf.type == syms.Alternatives:
+            new_node = reduce_tree(alternatives_node, parent)
+
+        #handle repeaters
+        if has_repeater:
+            if repeater_node.children[0].value == '*':
+                #reduce to None
+                new_node = None
+            elif repeater_node.children[0].value == '+':
+                #reduce to a single occurrence i.e. do nothing
+                pass
+            else:
+                #TODO: handle {min, max} repeaters
+                raise NotImplementedError
+                pass
+
+        #add children
+        if details_node and new_node is not None:
+            for child in details_node.children[1:-1]:
+                #skip '<', '>' markers
+                reduced = reduce_tree(child, new_node)
+                if reduced is not None:
+                    new_node.children.append(reduced)
+    if new_node:
+        new_node.parent = parent
+    return new_node
+
+
+def get_characteristic_subpattern(subpatterns):
+    """Picks the most characteristic from a list of linear patterns
+    Current order used is:
+    names > common_names > common_chars
+    """
+    if not isinstance(subpatterns, list):
+        return subpatterns
+    if len(subpatterns)==1:
+        return subpatterns[0]
+
+    # first pick out the ones containing variable names
+    subpatterns_with_names = []
+    subpatterns_with_common_names = []
+    common_names = ['in', 'for', 'if' , 'not', 'None']
+    subpatterns_with_common_chars = []
+    common_chars = "[]().,:"
+    for subpattern in subpatterns:
+        if any(rec_test(subpattern, lambda x: type(x) is str)):
+            if any(rec_test(subpattern,
+                            lambda x: isinstance(x, str) and x in common_chars)):
+                subpatterns_with_common_chars.append(subpattern)
+            elif any(rec_test(subpattern,
+                              lambda x: isinstance(x, str) and x in common_names)):
+                subpatterns_with_common_names.append(subpattern)
+
+            else:
+                subpatterns_with_names.append(subpattern)
+
+    if subpatterns_with_names:
+        subpatterns = subpatterns_with_names
+    elif subpatterns_with_common_names:
+        subpatterns = subpatterns_with_common_names
+    elif subpatterns_with_common_chars:
+        subpatterns = subpatterns_with_common_chars
+    # of the remaining subpatterns pick out the longest one
+    return max(subpatterns, key=len)
+
+def rec_test(sequence, test_func):
+    """Tests test_func on all items of sequence and items of included
+    sub-iterables"""
+    for x in sequence:
+        if isinstance(x, (list, tuple)):
+            yield from rec_test(x, test_func)
+        else:
+            yield test_func(x)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixer_base.py b/rootfs/usr/lib/python3.8/lib2to3/fixer_base.py
new file mode 100644
index 0000000..df581a4
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixer_base.py
@@ -0,0 +1,186 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Base class for fixers (optional, but recommended)."""
+
+# Python imports
+import itertools
+
+# Local imports
+from .patcomp import PatternCompiler
+from . import pygram
+from .fixer_util import does_tree_import
+
+class BaseFix(object):
+
+    """Optional base class for fixers.
+
+    The subclass name must be FixFooBar where FooBar is the result of
+    removing underscores and capitalizing the words of the fix name.
+    For example, the class name for a fixer named 'has_key' should be
+    FixHasKey.
+    """
+
+    PATTERN = None  # Most subclasses should override with a string literal
+    pattern = None  # Compiled pattern, set by compile_pattern()
+    pattern_tree = None # Tree representation of the pattern
+    options = None  # Options object passed to initializer
+    filename = None # The filename (set by set_filename)
+    numbers = itertools.count(1) # For new_name()
+    used_names = set() # A set of all used NAMEs
+    order = "post" # Does the fixer prefer pre- or post-order traversal
+    explicit = False # Is this ignored by refactor.py -f all?
+    run_order = 5   # Fixers will be sorted by run order before execution
+                    # Lower numbers will be run first.
+    _accept_type = None # [Advanced and not public] This tells RefactoringTool
+                        # which node type to accept when there's not a pattern.
+
+    keep_line_order = False # For the bottom matcher: match with the
+                            # original line order
+    BM_compatible = False # Compatibility with the bottom matching
+                          # module; every fixer should set this
+                          # manually
+
+    # Shortcut for access to Python grammar symbols
+    syms = pygram.python_symbols
+
+    def __init__(self, options, log):
+        """Initializer.  Subclass may override.
+
+        Args:
+            options: a dict containing the options passed to RefactoringTool
+            that could be used to customize the fixer through the command line.
+            log: a list to append warnings and other messages to.
+        """
+        self.options = options
+        self.log = log
+        self.compile_pattern()
+
+    def compile_pattern(self):
+        """Compiles self.PATTERN into self.pattern.
+
+        Subclass may override if it doesn't want to use
+        self.{pattern,PATTERN} in .match().
+        """
+        if self.PATTERN is not None:
+            PC = PatternCompiler()
+            self.pattern, self.pattern_tree = PC.compile_pattern(self.PATTERN,
+                                                                 with_tree=True)
+
+    def set_filename(self, filename):
+        """Set the filename.
+
+        The main refactoring tool should call this.
+        """
+        self.filename = filename
+
+    def match(self, node):
+        """Returns match for a given parse tree node.
+
+        Should return a true or false object (not necessarily a bool).
+        It may return a non-empty dict of matching sub-nodes as
+        returned by a matching pattern.
+
+        Subclass may override.
+        """
+        results = {"node": node}
+        return self.pattern.match(node, results) and results
+
+    def transform(self, node, results):
+        """Returns the transformation for a given parse tree node.
+
+        Args:
+          node: the root of the parse tree that matched the fixer.
+          results: a dict mapping symbolic names to part of the match.
+
+        Returns:
+          None, or a node that is a modified copy of the
+          argument node.  The node argument may also be modified in-place to
+          effect the same change.
+
+        Subclass *must* override.
+        """
+        raise NotImplementedError()
+
+    def new_name(self, template="xxx_todo_changeme"):
+        """Return a string suitable for use as an identifier
+
+        The new name is guaranteed not to conflict with other identifiers.
+        """
+        name = template
+        while name in self.used_names:
+            name = template + str(next(self.numbers))
+        self.used_names.add(name)
+        return name
+
+    def log_message(self, message):
+        if self.first_log:
+            self.first_log = False
+            self.log.append("### In file %s ###" % self.filename)
+        self.log.append(message)
+
+    def cannot_convert(self, node, reason=None):
+        """Warn the user that a given chunk of code is not valid Python 3,
+        but that it cannot be converted automatically.
+
+        First argument is the top-level node for the code in question.
+        Optional second argument is why it can't be converted.
+        """
+        lineno = node.get_lineno()
+        for_output = node.clone()
+        for_output.prefix = ""
+        msg = "Line %d: could not convert: %s"
+        self.log_message(msg % (lineno, for_output))
+        if reason:
+            self.log_message(reason)
+
+    def warning(self, node, reason):
+        """Used for warning the user about possible uncertainty in the
+        translation.
+
+        First argument is the top-level node for the code in question.
+        Optional second argument is why it can't be converted.
+        """
+        lineno = node.get_lineno()
+        self.log_message("Line %d: %s" % (lineno, reason))
+
+    def start_tree(self, tree, filename):
+        """Some fixers need to maintain tree-wide state.
+        This method is called once, at the start of tree fix-up.
+
+        tree - the root node of the tree to be processed.
+        filename - the name of the file the tree came from.
+        """
+        self.used_names = tree.used_names
+        self.set_filename(filename)
+        self.numbers = itertools.count(1)
+        self.first_log = True
+
+    def finish_tree(self, tree, filename):
+        """Some fixers need to maintain tree-wide state.
+        This method is called once, at the conclusion of tree fix-up.
+
+        tree - the root node of the tree to be processed.
+        filename - the name of the file the tree came from.
+        """
+        pass
+
+
+class ConditionalFix(BaseFix):
+    """ Base class for fixers which not execute if an import is found. """
+
+    # This is the name of the import which, if found, will cause the test to be skipped
+    skip_on = None
+
+    def start_tree(self, *args):
+        super(ConditionalFix, self).start_tree(*args)
+        self._should_skip = None
+
+    def should_skip(self, node):
+        if self._should_skip is not None:
+            return self._should_skip
+        pkg = self.skip_on.split(".")
+        name = pkg[-1]
+        pkg = ".".join(pkg[:-1])
+        self._should_skip = does_tree_import(pkg, name, node)
+        return self._should_skip
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixer_util.py b/rootfs/usr/lib/python3.8/lib2to3/fixer_util.py
new file mode 100644
index 0000000..babe6cb
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixer_util.py
@@ -0,0 +1,453 @@
+"""Utility functions, node construction macros, etc."""
+# Author: Collin Winter
+
+# Local imports
+from .pgen2 import token
+from .pytree import Leaf, Node
+from .pygram import python_symbols as syms
+from . import patcomp
+
+
+###########################################################
+### Common node-construction "macros"
+###########################################################
+
+def KeywordArg(keyword, value):
+    return Node(syms.argument,
+                [keyword, Leaf(token.EQUAL, "="), value])
+
+def LParen():
+    return Leaf(token.LPAR, "(")
+
+def RParen():
+    return Leaf(token.RPAR, ")")
+
+def Assign(target, source):
+    """Build an assignment statement"""
+    if not isinstance(target, list):
+        target = [target]
+    if not isinstance(source, list):
+        source.prefix = " "
+        source = [source]
+
+    return Node(syms.atom,
+                target + [Leaf(token.EQUAL, "=", prefix=" ")] + source)
+
+def Name(name, prefix=None):
+    """Return a NAME leaf"""
+    return Leaf(token.NAME, name, prefix=prefix)
+
+def Attr(obj, attr):
+    """A node tuple for obj.attr"""
+    return [obj, Node(syms.trailer, [Dot(), attr])]
+
+def Comma():
+    """A comma leaf"""
+    return Leaf(token.COMMA, ",")
+
+def Dot():
+    """A period (.) leaf"""
+    return Leaf(token.DOT, ".")
+
+def ArgList(args, lparen=LParen(), rparen=RParen()):
+    """A parenthesised argument list, used by Call()"""
+    node = Node(syms.trailer, [lparen.clone(), rparen.clone()])
+    if args:
+        node.insert_child(1, Node(syms.arglist, args))
+    return node
+
+def Call(func_name, args=None, prefix=None):
+    """A function call"""
+    node = Node(syms.power, [func_name, ArgList(args)])
+    if prefix is not None:
+        node.prefix = prefix
+    return node
+
+def Newline():
+    """A newline literal"""
+    return Leaf(token.NEWLINE, "\n")
+
+def BlankLine():
+    """A blank line"""
+    return Leaf(token.NEWLINE, "")
+
+def Number(n, prefix=None):
+    return Leaf(token.NUMBER, n, prefix=prefix)
+
+def Subscript(index_node):
+    """A numeric or string subscript"""
+    return Node(syms.trailer, [Leaf(token.LBRACE, "["),
+                               index_node,
+                               Leaf(token.RBRACE, "]")])
+
+def String(string, prefix=None):
+    """A string leaf"""
+    return Leaf(token.STRING, string, prefix=prefix)
+
+def ListComp(xp, fp, it, test=None):
+    """A list comprehension of the form [xp for fp in it if test].
+
+    If test is None, the "if test" part is omitted.
+    """
+    xp.prefix = ""
+    fp.prefix = " "
+    it.prefix = " "
+    for_leaf = Leaf(token.NAME, "for")
+    for_leaf.prefix = " "
+    in_leaf = Leaf(token.NAME, "in")
+    in_leaf.prefix = " "
+    inner_args = [for_leaf, fp, in_leaf, it]
+    if test:
+        test.prefix = " "
+        if_leaf = Leaf(token.NAME, "if")
+        if_leaf.prefix = " "
+        inner_args.append(Node(syms.comp_if, [if_leaf, test]))
+    inner = Node(syms.listmaker, [xp, Node(syms.comp_for, inner_args)])
+    return Node(syms.atom,
+                       [Leaf(token.LBRACE, "["),
+                        inner,
+                        Leaf(token.RBRACE, "]")])
+
+def FromImport(package_name, name_leafs):
+    """ Return an import statement in the form:
+        from package import name_leafs"""
+    # XXX: May not handle dotted imports properly (eg, package_name='foo.bar')
+    #assert package_name == '.' or '.' not in package_name, "FromImport has "\
+    #       "not been tested with dotted package names -- use at your own "\
+    #       "peril!"
+
+    for leaf in name_leafs:
+        # Pull the leaves out of their old tree
+        leaf.remove()
+
+    children = [Leaf(token.NAME, "from"),
+                Leaf(token.NAME, package_name, prefix=" "),
+                Leaf(token.NAME, "import", prefix=" "),
+                Node(syms.import_as_names, name_leafs)]
+    imp = Node(syms.import_from, children)
+    return imp
+
+def ImportAndCall(node, results, names):
+    """Returns an import statement and calls a method
+    of the module:
+
+    import module
+    module.name()"""
+    obj = results["obj"].clone()
+    if obj.type == syms.arglist:
+        newarglist = obj.clone()
+    else:
+        newarglist = Node(syms.arglist, [obj.clone()])
+    after = results["after"]
+    if after:
+        after = [n.clone() for n in after]
+    new = Node(syms.power,
+               Attr(Name(names[0]), Name(names[1])) +
+               [Node(syms.trailer,
+                     [results["lpar"].clone(),
+                      newarglist,
+                      results["rpar"].clone()])] + after)
+    new.prefix = node.prefix
+    return new
+
+
+###########################################################
+### Determine whether a node represents a given literal
+###########################################################
+
+def is_tuple(node):
+    """Does the node represent a tuple literal?"""
+    if isinstance(node, Node) and node.children == [LParen(), RParen()]:
+        return True
+    return (isinstance(node, Node)
+            and len(node.children) == 3
+            and isinstance(node.children[0], Leaf)
+            and isinstance(node.children[1], Node)
+            and isinstance(node.children[2], Leaf)
+            and node.children[0].value == "("
+            and node.children[2].value == ")")
+
+def is_list(node):
+    """Does the node represent a list literal?"""
+    return (isinstance(node, Node)
+            and len(node.children) > 1
+            and isinstance(node.children[0], Leaf)
+            and isinstance(node.children[-1], Leaf)
+            and node.children[0].value == "["
+            and node.children[-1].value == "]")
+
+
+###########################################################
+### Misc
+###########################################################
+
+def parenthesize(node):
+    return Node(syms.atom, [LParen(), node, RParen()])
+
+
+consuming_calls = {"sorted", "list", "set", "any", "all", "tuple", "sum",
+                   "min", "max", "enumerate"}
+
+def attr_chain(obj, attr):
+    """Follow an attribute chain.
+
+    If you have a chain of objects where a.foo -> b, b.foo-> c, etc,
+    use this to iterate over all objects in the chain. Iteration is
+    terminated by getattr(x, attr) is None.
+
+    Args:
+        obj: the starting object
+        attr: the name of the chaining attribute
+
+    Yields:
+        Each successive object in the chain.
+    """
+    next = getattr(obj, attr)
+    while next:
+        yield next
+        next = getattr(next, attr)
+
+p0 = """for_stmt< 'for' any 'in' node=any ':' any* >
+        | comp_for< 'for' any 'in' node=any any* >
+     """
+p1 = """
+power<
+    ( 'iter' | 'list' | 'tuple' | 'sorted' | 'set' | 'sum' |
+      'any' | 'all' | 'enumerate' | (any* trailer< '.' 'join' >) )
+    trailer< '(' node=any ')' >
+    any*
+>
+"""
+p2 = """
+power<
+    ( 'sorted' | 'enumerate' )
+    trailer< '(' arglist<node=any any*> ')' >
+    any*
+>
+"""
+pats_built = False
+def in_special_context(node):
+    """ Returns true if node is in an environment where all that is required
+        of it is being iterable (ie, it doesn't matter if it returns a list
+        or an iterator).
+        See test_map_nochange in test_fixers.py for some examples and tests.
+        """
+    global p0, p1, p2, pats_built
+    if not pats_built:
+        p0 = patcomp.compile_pattern(p0)
+        p1 = patcomp.compile_pattern(p1)
+        p2 = patcomp.compile_pattern(p2)
+        pats_built = True
+    patterns = [p0, p1, p2]
+    for pattern, parent in zip(patterns, attr_chain(node, "parent")):
+        results = {}
+        if pattern.match(parent, results) and results["node"] is node:
+            return True
+    return False
+
+def is_probably_builtin(node):
+    """
+    Check that something isn't an attribute or function name etc.
+    """
+    prev = node.prev_sibling
+    if prev is not None and prev.type == token.DOT:
+        # Attribute lookup.
+        return False
+    parent = node.parent
+    if parent.type in (syms.funcdef, syms.classdef):
+        return False
+    if parent.type == syms.expr_stmt and parent.children[0] is node:
+        # Assignment.
+        return False
+    if parent.type == syms.parameters or \
+            (parent.type == syms.typedargslist and (
+            (prev is not None and prev.type == token.COMMA) or
+            parent.children[0] is node
+            )):
+        # The name of an argument.
+        return False
+    return True
+
+def find_indentation(node):
+    """Find the indentation of *node*."""
+    while node is not None:
+        if node.type == syms.suite and len(node.children) > 2:
+            indent = node.children[1]
+            if indent.type == token.INDENT:
+                return indent.value
+        node = node.parent
+    return ""
+
+###########################################################
+### The following functions are to find bindings in a suite
+###########################################################
+
+def make_suite(node):
+    if node.type == syms.suite:
+        return node
+    node = node.clone()
+    parent, node.parent = node.parent, None
+    suite = Node(syms.suite, [node])
+    suite.parent = parent
+    return suite
+
+def find_root(node):
+    """Find the top level namespace."""
+    # Scamper up to the top level namespace
+    while node.type != syms.file_input:
+        node = node.parent
+        if not node:
+            raise ValueError("root found before file_input node was found.")
+    return node
+
+def does_tree_import(package, name, node):
+    """ Returns true if name is imported from package at the
+        top level of the tree which node belongs to.
+        To cover the case of an import like 'import foo', use
+        None for the package and 'foo' for the name. """
+    binding = find_binding(name, find_root(node), package)
+    return bool(binding)
+
+def is_import(node):
+    """Returns true if the node is an import statement."""
+    return node.type in (syms.import_name, syms.import_from)
+
+def touch_import(package, name, node):
+    """ Works like `does_tree_import` but adds an import statement
+        if it was not imported. """
+    def is_import_stmt(node):
+        return (node.type == syms.simple_stmt and node.children and
+                is_import(node.children[0]))
+
+    root = find_root(node)
+
+    if does_tree_import(package, name, root):
+        return
+
+    # figure out where to insert the new import.  First try to find
+    # the first import and then skip to the last one.
+    insert_pos = offset = 0
+    for idx, node in enumerate(root.children):
+        if not is_import_stmt(node):
+            continue
+        for offset, node2 in enumerate(root.children[idx:]):
+            if not is_import_stmt(node2):
+                break
+        insert_pos = idx + offset
+        break
+
+    # if there are no imports where we can insert, find the docstring.
+    # if that also fails, we stick to the beginning of the file
+    if insert_pos == 0:
+        for idx, node in enumerate(root.children):
+            if (node.type == syms.simple_stmt and node.children and
+               node.children[0].type == token.STRING):
+                insert_pos = idx + 1
+                break
+
+    if package is None:
+        import_ = Node(syms.import_name, [
+            Leaf(token.NAME, "import"),
+            Leaf(token.NAME, name, prefix=" ")
+        ])
+    else:
+        import_ = FromImport(package, [Leaf(token.NAME, name, prefix=" ")])
+
+    children = [import_, Newline()]
+    root.insert_child(insert_pos, Node(syms.simple_stmt, children))
+
+
+_def_syms = {syms.classdef, syms.funcdef}
+def find_binding(name, node, package=None):
+    """ Returns the node which binds variable name, otherwise None.
+        If optional argument package is supplied, only imports will
+        be returned.
+        See test cases for examples."""
+    for child in node.children:
+        ret = None
+        if child.type == syms.for_stmt:
+            if _find(name, child.children[1]):
+                return child
+            n = find_binding(name, make_suite(child.children[-1]), package)
+            if n: ret = n
+        elif child.type in (syms.if_stmt, syms.while_stmt):
+            n = find_binding(name, make_suite(child.children[-1]), package)
+            if n: ret = n
+        elif child.type == syms.try_stmt:
+            n = find_binding(name, make_suite(child.children[2]), package)
+            if n:
+                ret = n
+            else:
+                for i, kid in enumerate(child.children[3:]):
+                    if kid.type == token.COLON and kid.value == ":":
+                        # i+3 is the colon, i+4 is the suite
+                        n = find_binding(name, make_suite(child.children[i+4]), package)
+                        if n: ret = n
+        elif child.type in _def_syms and child.children[1].value == name:
+            ret = child
+        elif _is_import_binding(child, name, package):
+            ret = child
+        elif child.type == syms.simple_stmt:
+            ret = find_binding(name, child, package)
+        elif child.type == syms.expr_stmt:
+            if _find(name, child.children[0]):
+                ret = child
+
+        if ret:
+            if not package:
+                return ret
+            if is_import(ret):
+                return ret
+    return None
+
+_block_syms = {syms.funcdef, syms.classdef, syms.trailer}
+def _find(name, node):
+    nodes = [node]
+    while nodes:
+        node = nodes.pop()
+        if node.type > 256 and node.type not in _block_syms:
+            nodes.extend(node.children)
+        elif node.type == token.NAME and node.value == name:
+            return node
+    return None
+
+def _is_import_binding(node, name, package=None):
+    """ Will reuturn node if node will import name, or node
+        will import * from package.  None is returned otherwise.
+        See test cases for examples. """
+
+    if node.type == syms.import_name and not package:
+        imp = node.children[1]
+        if imp.type == syms.dotted_as_names:
+            for child in imp.children:
+                if child.type == syms.dotted_as_name:
+                    if child.children[2].value == name:
+                        return node
+                elif child.type == token.NAME and child.value == name:
+                    return node
+        elif imp.type == syms.dotted_as_name:
+            last = imp.children[-1]
+            if last.type == token.NAME and last.value == name:
+                return node
+        elif imp.type == token.NAME and imp.value == name:
+            return node
+    elif node.type == syms.import_from:
+        # str(...) is used to make life easier here, because
+        # from a.b import parses to ['import', ['a', '.', 'b'], ...]
+        if package and str(node.children[1]).strip() != package:
+            return None
+        n = node.children[3]
+        if package and _find("as", n):
+            # See test_from_import_as for explanation
+            return None
+        elif n.type == syms.import_as_names and _find(name, n):
+            return node
+        elif n.type == syms.import_as_name:
+            child = n.children[2]
+            if child.type == token.NAME and child.value == name:
+                return node
+        elif n.type == token.NAME and n.value == name:
+            return node
+        elif package and n.type == token.STAR:
+            return node
+    return None
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/__init__.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/__init__.py
new file mode 100644
index 0000000..b93054b
--- /dev/null
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@@ -0,0 +1 @@
+# Dummy file to make this directory a package.
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--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_apply.py
@@ -0,0 +1,68 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for apply().
+
+This converts apply(func, v, k) into (func)(*v, **k)."""
+
+# Local imports
+from .. import pytree
+from ..pgen2 import token
+from .. import fixer_base
+from ..fixer_util import Call, Comma, parenthesize
+
+class FixApply(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+    power< 'apply'
+        trailer<
+            '('
+            arglist<
+                (not argument<NAME '=' any>) func=any ','
+                (not argument<NAME '=' any>) args=any [','
+                (not argument<NAME '=' any>) kwds=any] [',']
+            >
+            ')'
+        >
+    >
+    """
+
+    def transform(self, node, results):
+        syms = self.syms
+        assert results
+        func = results["func"]
+        args = results["args"]
+        kwds = results.get("kwds")
+        # I feel like we should be able to express this logic in the
+        # PATTERN above but I don't know how to do it so...
+        if args:
+            if (args.type == self.syms.argument and
+                args.children[0].value in {'**', '*'}):
+                return  # Make no change.
+        if kwds and (kwds.type == self.syms.argument and
+                     kwds.children[0].value == '**'):
+            return  # Make no change.
+        prefix = node.prefix
+        func = func.clone()
+        if (func.type not in (token.NAME, syms.atom) and
+            (func.type != syms.power or
+             func.children[-2].type == token.DOUBLESTAR)):
+            # Need to parenthesize
+            func = parenthesize(func)
+        func.prefix = ""
+        args = args.clone()
+        args.prefix = ""
+        if kwds is not None:
+            kwds = kwds.clone()
+            kwds.prefix = ""
+        l_newargs = [pytree.Leaf(token.STAR, "*"), args]
+        if kwds is not None:
+            l_newargs.extend([Comma(),
+                              pytree.Leaf(token.DOUBLESTAR, "**"),
+                              kwds])
+            l_newargs[-2].prefix = " " # that's the ** token
+        # XXX Sometimes we could be cleverer, e.g. apply(f, (x, y) + t)
+        # can be translated into f(x, y, *t) instead of f(*(x, y) + t)
+        #new = pytree.Node(syms.power, (func, ArgList(l_newargs)))
+        return Call(func, l_newargs, prefix=prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_asserts.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_asserts.py
new file mode 100644
index 0000000..5bcec88
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_asserts.py
@@ -0,0 +1,34 @@
+"""Fixer that replaces deprecated unittest method names."""
+
+# Author: Ezio Melotti
+
+from ..fixer_base import BaseFix
+from ..fixer_util import Name
+
+NAMES = dict(
+    assert_="assertTrue",
+    assertEquals="assertEqual",
+    assertNotEquals="assertNotEqual",
+    assertAlmostEquals="assertAlmostEqual",
+    assertNotAlmostEquals="assertNotAlmostEqual",
+    assertRegexpMatches="assertRegex",
+    assertRaisesRegexp="assertRaisesRegex",
+    failUnlessEqual="assertEqual",
+    failIfEqual="assertNotEqual",
+    failUnlessAlmostEqual="assertAlmostEqual",
+    failIfAlmostEqual="assertNotAlmostEqual",
+    failUnless="assertTrue",
+    failUnlessRaises="assertRaises",
+    failIf="assertFalse",
+)
+
+
+class FixAsserts(BaseFix):
+
+    PATTERN = """
+              power< any+ trailer< '.' meth=(%s)> any* >
+              """ % '|'.join(map(repr, NAMES))
+
+    def transform(self, node, results):
+        name = results["meth"][0]
+        name.replace(Name(NAMES[str(name)], prefix=name.prefix))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_basestring.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_basestring.py
new file mode 100644
index 0000000..5fe69a0
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_basestring.py
@@ -0,0 +1,14 @@
+"""Fixer for basestring -> str."""
+# Author: Christian Heimes
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+class FixBasestring(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = "'basestring'"
+
+    def transform(self, node, results):
+        return Name("str", prefix=node.prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_buffer.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_buffer.py
new file mode 100644
index 0000000..f9a1958
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_buffer.py
@@ -0,0 +1,22 @@
+# Copyright 2007 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer that changes buffer(...) into memoryview(...)."""
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+
+class FixBuffer(fixer_base.BaseFix):
+    BM_compatible = True
+
+    explicit = True # The user must ask for this fixer
+
+    PATTERN = """
+              power< name='buffer' trailer< '(' [any] ')' > any* >
+              """
+
+    def transform(self, node, results):
+        name = results["name"]
+        name.replace(Name("memoryview", prefix=name.prefix))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_dict.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_dict.py
new file mode 100644
index 0000000..d3655c9
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_dict.py
@@ -0,0 +1,106 @@
+# Copyright 2007 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for dict methods.
+
+d.keys() -> list(d.keys())
+d.items() -> list(d.items())
+d.values() -> list(d.values())
+
+d.iterkeys() -> iter(d.keys())
+d.iteritems() -> iter(d.items())
+d.itervalues() -> iter(d.values())
+
+d.viewkeys() -> d.keys()
+d.viewitems() -> d.items()
+d.viewvalues() -> d.values()
+
+Except in certain very specific contexts: the iter() can be dropped
+when the context is list(), sorted(), iter() or for...in; the list()
+can be dropped when the context is list() or sorted() (but not iter()
+or for...in!). Special contexts that apply to both: list(), sorted(), tuple()
+set(), any(), all(), sum().
+
+Note: iter(d.keys()) could be written as iter(d) but since the
+original d.iterkeys() was also redundant we don't fix this.  And there
+are (rare) contexts where it makes a difference (e.g. when passing it
+as an argument to a function that introspects the argument).
+"""
+
+# Local imports
+from .. import pytree
+from .. import patcomp
+from .. import fixer_base
+from ..fixer_util import Name, Call, Dot
+from .. import fixer_util
+
+
+iter_exempt = fixer_util.consuming_calls | {"iter"}
+
+
+class FixDict(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+    power< head=any+
+         trailer< '.' method=('keys'|'items'|'values'|
+                              'iterkeys'|'iteritems'|'itervalues'|
+                              'viewkeys'|'viewitems'|'viewvalues') >
+         parens=trailer< '(' ')' >
+         tail=any*
+    >
+    """
+
+    def transform(self, node, results):
+        head = results["head"]
+        method = results["method"][0] # Extract node for method name
+        tail = results["tail"]
+        syms = self.syms
+        method_name = method.value
+        isiter = method_name.startswith("iter")
+        isview = method_name.startswith("view")
+        if isiter or isview:
+            method_name = method_name[4:]
+        assert method_name in ("keys", "items", "values"), repr(method)
+        head = [n.clone() for n in head]
+        tail = [n.clone() for n in tail]
+        special = not tail and self.in_special_context(node, isiter)
+        args = head + [pytree.Node(syms.trailer,
+                                   [Dot(),
+                                    Name(method_name,
+                                         prefix=method.prefix)]),
+                       results["parens"].clone()]
+        new = pytree.Node(syms.power, args)
+        if not (special or isview):
+            new.prefix = ""
+            new = Call(Name("iter" if isiter else "list"), [new])
+        if tail:
+            new = pytree.Node(syms.power, [new] + tail)
+        new.prefix = node.prefix
+        return new
+
+    P1 = "power< func=NAME trailer< '(' node=any ')' > any* >"
+    p1 = patcomp.compile_pattern(P1)
+
+    P2 = """for_stmt< 'for' any 'in' node=any ':' any* >
+            | comp_for< 'for' any 'in' node=any any* >
+         """
+    p2 = patcomp.compile_pattern(P2)
+
+    def in_special_context(self, node, isiter):
+        if node.parent is None:
+            return False
+        results = {}
+        if (node.parent.parent is not None and
+               self.p1.match(node.parent.parent, results) and
+               results["node"] is node):
+            if isiter:
+                # iter(d.iterkeys()) -> iter(d.keys()), etc.
+                return results["func"].value in iter_exempt
+            else:
+                # list(d.keys()) -> list(d.keys()), etc.
+                return results["func"].value in fixer_util.consuming_calls
+        if not isiter:
+            return False
+        # for ... in d.iterkeys() -> for ... in d.keys(), etc.
+        return self.p2.match(node.parent, results) and results["node"] is node
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_except.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_except.py
new file mode 100644
index 0000000..49bd3d5
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_except.py
@@ -0,0 +1,93 @@
+"""Fixer for except statements with named exceptions.
+
+The following cases will be converted:
+
+- "except E, T:" where T is a name:
+
+    except E as T:
+
+- "except E, T:" where T is not a name, tuple or list:
+
+        except E as t:
+            T = t
+
+    This is done because the target of an "except" clause must be a
+    name.
+
+- "except E, T:" where T is a tuple or list literal:
+
+        except E as t:
+            T = t.args
+"""
+# Author: Collin Winter
+
+# Local imports
+from .. import pytree
+from ..pgen2 import token
+from .. import fixer_base
+from ..fixer_util import Assign, Attr, Name, is_tuple, is_list, syms
+
+def find_excepts(nodes):
+    for i, n in enumerate(nodes):
+        if n.type == syms.except_clause:
+            if n.children[0].value == 'except':
+                yield (n, nodes[i+2])
+
+class FixExcept(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+    try_stmt< 'try' ':' (simple_stmt | suite)
+                  cleanup=(except_clause ':' (simple_stmt | suite))+
+                  tail=(['except' ':' (simple_stmt | suite)]
+                        ['else' ':' (simple_stmt | suite)]
+                        ['finally' ':' (simple_stmt | suite)]) >
+    """
+
+    def transform(self, node, results):
+        syms = self.syms
+
+        tail = [n.clone() for n in results["tail"]]
+
+        try_cleanup = [ch.clone() for ch in results["cleanup"]]
+        for except_clause, e_suite in find_excepts(try_cleanup):
+            if len(except_clause.children) == 4:
+                (E, comma, N) = except_clause.children[1:4]
+                comma.replace(Name("as", prefix=" "))
+
+                if N.type != token.NAME:
+                    # Generate a new N for the except clause
+                    new_N = Name(self.new_name(), prefix=" ")
+                    target = N.clone()
+                    target.prefix = ""
+                    N.replace(new_N)
+                    new_N = new_N.clone()
+
+                    # Insert "old_N = new_N" as the first statement in
+                    #  the except body. This loop skips leading whitespace
+                    #  and indents
+                    #TODO(cwinter) suite-cleanup
+                    suite_stmts = e_suite.children
+                    for i, stmt in enumerate(suite_stmts):
+                        if isinstance(stmt, pytree.Node):
+                            break
+
+                    # The assignment is different if old_N is a tuple or list
+                    # In that case, the assignment is old_N = new_N.args
+                    if is_tuple(N) or is_list(N):
+                        assign = Assign(target, Attr(new_N, Name('args')))
+                    else:
+                        assign = Assign(target, new_N)
+
+                    #TODO(cwinter) stopgap until children becomes a smart list
+                    for child in reversed(suite_stmts[:i]):
+                        e_suite.insert_child(0, child)
+                    e_suite.insert_child(i, assign)
+                elif N.prefix == "":
+                    # No space after a comma is legal; no space after "as",
+                    # not so much.
+                    N.prefix = " "
+
+        #TODO(cwinter) fix this when children becomes a smart list
+        children = [c.clone() for c in node.children[:3]] + try_cleanup + tail
+        return pytree.Node(node.type, children)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_exec.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_exec.py
new file mode 100644
index 0000000..ab921ee
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_exec.py
@@ -0,0 +1,39 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for exec.
+
+This converts usages of the exec statement into calls to a built-in
+exec() function.
+
+exec code in ns1, ns2 -> exec(code, ns1, ns2)
+"""
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Comma, Name, Call
+
+
+class FixExec(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+    exec_stmt< 'exec' a=any 'in' b=any [',' c=any] >
+    |
+    exec_stmt< 'exec' (not atom<'(' [any] ')'>) a=any >
+    """
+
+    def transform(self, node, results):
+        assert results
+        syms = self.syms
+        a = results["a"]
+        b = results.get("b")
+        c = results.get("c")
+        args = [a.clone()]
+        args[0].prefix = ""
+        if b is not None:
+            args.extend([Comma(), b.clone()])
+        if c is not None:
+            args.extend([Comma(), c.clone()])
+
+        return Call(Name("exec"), args, prefix=node.prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_execfile.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_execfile.py
new file mode 100644
index 0000000..b6c786f
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_execfile.py
@@ -0,0 +1,53 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for execfile.
+
+This converts usages of the execfile function into calls to the built-in
+exec() function.
+"""
+
+from .. import fixer_base
+from ..fixer_util import (Comma, Name, Call, LParen, RParen, Dot, Node,
+                          ArgList, String, syms)
+
+
+class FixExecfile(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+    power< 'execfile' trailer< '(' arglist< filename=any [',' globals=any [',' locals=any ] ] > ')' > >
+    |
+    power< 'execfile' trailer< '(' filename=any ')' > >
+    """
+
+    def transform(self, node, results):
+        assert results
+        filename = results["filename"]
+        globals = results.get("globals")
+        locals = results.get("locals")
+
+        # Copy over the prefix from the right parentheses end of the execfile
+        # call.
+        execfile_paren = node.children[-1].children[-1].clone()
+        # Construct open().read().
+        open_args = ArgList([filename.clone(), Comma(), String('"rb"', ' ')],
+                            rparen=execfile_paren)
+        open_call = Node(syms.power, [Name("open"), open_args])
+        read = [Node(syms.trailer, [Dot(), Name('read')]),
+                Node(syms.trailer, [LParen(), RParen()])]
+        open_expr = [open_call] + read
+        # Wrap the open call in a compile call. This is so the filename will be
+        # preserved in the execed code.
+        filename_arg = filename.clone()
+        filename_arg.prefix = " "
+        exec_str = String("'exec'", " ")
+        compile_args = open_expr + [Comma(), filename_arg, Comma(), exec_str]
+        compile_call = Call(Name("compile"), compile_args, "")
+        # Finally, replace the execfile call with an exec call.
+        args = [compile_call]
+        if globals is not None:
+            args.extend([Comma(), globals.clone()])
+        if locals is not None:
+            args.extend([Comma(), locals.clone()])
+        return Call(Name("exec"), args, prefix=node.prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_exitfunc.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_exitfunc.py
new file mode 100644
index 0000000..2e47887
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_exitfunc.py
@@ -0,0 +1,72 @@
+"""
+Convert use of sys.exitfunc to use the atexit module.
+"""
+
+# Author: Benjamin Peterson
+
+from lib2to3 import pytree, fixer_base
+from lib2to3.fixer_util import Name, Attr, Call, Comma, Newline, syms
+
+
+class FixExitfunc(fixer_base.BaseFix):
+    keep_line_order = True
+    BM_compatible = True
+
+    PATTERN = """
+              (
+                  sys_import=import_name<'import'
+                      ('sys'
+                      |
+                      dotted_as_names< (any ',')* 'sys' (',' any)* >
+                      )
+                  >
+              |
+                  expr_stmt<
+                      power< 'sys' trailer< '.' 'exitfunc' > >
+                  '=' func=any >
+              )
+              """
+
+    def __init__(self, *args):
+        super(FixExitfunc, self).__init__(*args)
+
+    def start_tree(self, tree, filename):
+        super(FixExitfunc, self).start_tree(tree, filename)
+        self.sys_import = None
+
+    def transform(self, node, results):
+        # First, find the sys import. We'll just hope it's global scope.
+        if "sys_import" in results:
+            if self.sys_import is None:
+                self.sys_import = results["sys_import"]
+            return
+
+        func = results["func"].clone()
+        func.prefix = ""
+        register = pytree.Node(syms.power,
+                               Attr(Name("atexit"), Name("register"))
+                               )
+        call = Call(register, [func], node.prefix)
+        node.replace(call)
+
+        if self.sys_import is None:
+            # That's interesting.
+            self.warning(node, "Can't find sys import; Please add an atexit "
+                             "import at the top of your file.")
+            return
+
+        # Now add an atexit import after the sys import.
+        names = self.sys_import.children[1]
+        if names.type == syms.dotted_as_names:
+            names.append_child(Comma())
+            names.append_child(Name("atexit", " "))
+        else:
+            containing_stmt = self.sys_import.parent
+            position = containing_stmt.children.index(self.sys_import)
+            stmt_container = containing_stmt.parent
+            new_import = pytree.Node(syms.import_name,
+                              [Name("import"), Name("atexit", " ")]
+                              )
+            new = pytree.Node(syms.simple_stmt, [new_import])
+            containing_stmt.insert_child(position + 1, Newline())
+            containing_stmt.insert_child(position + 2, new)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_filter.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_filter.py
new file mode 100644
index 0000000..38e9078
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_filter.py
@@ -0,0 +1,94 @@
+# Copyright 2007 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer that changes filter(F, X) into list(filter(F, X)).
+
+We avoid the transformation if the filter() call is directly contained
+in iter(<>), list(<>), tuple(<>), sorted(<>), ...join(<>), or
+for V in <>:.
+
+NOTE: This is still not correct if the original code was depending on
+filter(F, X) to return a string if X is a string and a tuple if X is a
+tuple.  That would require type inference, which we don't do.  Let
+Python 2.6 figure it out.
+"""
+
+# Local imports
+from .. import fixer_base
+from ..pytree import Node
+from ..pygram import python_symbols as syms
+from ..fixer_util import Name, ArgList, ListComp, in_special_context, parenthesize
+
+
+class FixFilter(fixer_base.ConditionalFix):
+    BM_compatible = True
+
+    PATTERN = """
+    filter_lambda=power<
+        'filter'
+        trailer<
+            '('
+            arglist<
+                lambdef< 'lambda'
+                         (fp=NAME | vfpdef< '(' fp=NAME ')'> ) ':' xp=any
+                >
+                ','
+                it=any
+            >
+            ')'
+        >
+        [extra_trailers=trailer*]
+    >
+    |
+    power<
+        'filter'
+        trailer< '(' arglist< none='None' ',' seq=any > ')' >
+        [extra_trailers=trailer*]
+    >
+    |
+    power<
+        'filter'
+        args=trailer< '(' [any] ')' >
+        [extra_trailers=trailer*]
+    >
+    """
+
+    skip_on = "future_builtins.filter"
+
+    def transform(self, node, results):
+        if self.should_skip(node):
+            return
+
+        trailers = []
+        if 'extra_trailers' in results:
+            for t in results['extra_trailers']:
+                trailers.append(t.clone())
+
+        if "filter_lambda" in results:
+            xp = results.get("xp").clone()
+            if xp.type == syms.test:
+                xp.prefix = ""
+                xp = parenthesize(xp)
+
+            new = ListComp(results.get("fp").clone(),
+                           results.get("fp").clone(),
+                           results.get("it").clone(), xp)
+            new = Node(syms.power, [new] + trailers, prefix="")
+
+        elif "none" in results:
+            new = ListComp(Name("_f"),
+                           Name("_f"),
+                           results["seq"].clone(),
+                           Name("_f"))
+            new = Node(syms.power, [new] + trailers, prefix="")
+
+        else:
+            if in_special_context(node):
+                return None
+
+            args = results['args'].clone()
+            new = Node(syms.power, [Name("filter"), args], prefix="")
+            new = Node(syms.power, [Name("list"), ArgList([new])] + trailers)
+            new.prefix = ""
+        new.prefix = node.prefix
+        return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_funcattrs.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_funcattrs.py
new file mode 100644
index 0000000..67f3e18
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_funcattrs.py
@@ -0,0 +1,21 @@
+"""Fix function attribute names (f.func_x -> f.__x__)."""
+# Author: Collin Winter
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+
+class FixFuncattrs(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+    power< any+ trailer< '.' attr=('func_closure' | 'func_doc' | 'func_globals'
+                                  | 'func_name' | 'func_defaults' | 'func_code'
+                                  | 'func_dict') > any* >
+    """
+
+    def transform(self, node, results):
+        attr = results["attr"][0]
+        attr.replace(Name(("__%s__" % attr.value[5:]),
+                          prefix=attr.prefix))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_future.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_future.py
new file mode 100644
index 0000000..fbcb86a
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_future.py
@@ -0,0 +1,22 @@
+"""Remove __future__ imports
+
+from __future__ import foo is replaced with an empty line.
+"""
+# Author: Christian Heimes
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import BlankLine
+
+class FixFuture(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """import_from< 'from' module_name="__future__" 'import' any >"""
+
+    # This should be run last -- some things check for the import
+    run_order = 10
+
+    def transform(self, node, results):
+        new = BlankLine()
+        new.prefix = node.prefix
+        return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_getcwdu.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_getcwdu.py
new file mode 100644
index 0000000..087eaed
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_getcwdu.py
@@ -0,0 +1,19 @@
+"""
+Fixer that changes os.getcwdu() to os.getcwd().
+"""
+# Author: Victor Stinner
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+class FixGetcwdu(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+              power< 'os' trailer< dot='.' name='getcwdu' > any* >
+              """
+
+    def transform(self, node, results):
+        name = results["name"]
+        name.replace(Name("getcwd", prefix=name.prefix))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_has_key.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_has_key.py
new file mode 100644
index 0000000..439708c
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_has_key.py
@@ -0,0 +1,109 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for has_key().
+
+Calls to .has_key() methods are expressed in terms of the 'in'
+operator:
+
+    d.has_key(k) -> k in d
+
+CAVEATS:
+1) While the primary target of this fixer is dict.has_key(), the
+   fixer will change any has_key() method call, regardless of its
+   class.
+
+2) Cases like this will not be converted:
+
+    m = d.has_key
+    if m(k):
+        ...
+
+   Only *calls* to has_key() are converted. While it is possible to
+   convert the above to something like
+
+    m = d.__contains__
+    if m(k):
+        ...
+
+   this is currently not done.
+"""
+
+# Local imports
+from .. import pytree
+from .. import fixer_base
+from ..fixer_util import Name, parenthesize
+
+
+class FixHasKey(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+    anchor=power<
+        before=any+
+        trailer< '.' 'has_key' >
+        trailer<
+            '('
+            ( not(arglist | argument<any '=' any>) arg=any
+            | arglist<(not argument<any '=' any>) arg=any ','>
+            )
+            ')'
+        >
+        after=any*
+    >
+    |
+    negation=not_test<
+        'not'
+        anchor=power<
+            before=any+
+            trailer< '.' 'has_key' >
+            trailer<
+                '('
+                ( not(arglist | argument<any '=' any>) arg=any
+                | arglist<(not argument<any '=' any>) arg=any ','>
+                )
+                ')'
+            >
+        >
+    >
+    """
+
+    def transform(self, node, results):
+        assert results
+        syms = self.syms
+        if (node.parent.type == syms.not_test and
+            self.pattern.match(node.parent)):
+            # Don't transform a node matching the first alternative of the
+            # pattern when its parent matches the second alternative
+            return None
+        negation = results.get("negation")
+        anchor = results["anchor"]
+        prefix = node.prefix
+        before = [n.clone() for n in results["before"]]
+        arg = results["arg"].clone()
+        after = results.get("after")
+        if after:
+            after = [n.clone() for n in after]
+        if arg.type in (syms.comparison, syms.not_test, syms.and_test,
+                        syms.or_test, syms.test, syms.lambdef, syms.argument):
+            arg = parenthesize(arg)
+        if len(before) == 1:
+            before = before[0]
+        else:
+            before = pytree.Node(syms.power, before)
+        before.prefix = " "
+        n_op = Name("in", prefix=" ")
+        if negation:
+            n_not = Name("not", prefix=" ")
+            n_op = pytree.Node(syms.comp_op, (n_not, n_op))
+        new = pytree.Node(syms.comparison, (arg, n_op, before))
+        if after:
+            new = parenthesize(new)
+            new = pytree.Node(syms.power, (new,) + tuple(after))
+        if node.parent.type in (syms.comparison, syms.expr, syms.xor_expr,
+                                syms.and_expr, syms.shift_expr,
+                                syms.arith_expr, syms.term,
+                                syms.factor, syms.power):
+            new = parenthesize(new)
+        new.prefix = prefix
+        return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_idioms.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_idioms.py
new file mode 100644
index 0000000..6905913
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_idioms.py
@@ -0,0 +1,152 @@
+"""Adjust some old Python 2 idioms to their modern counterparts.
+
+* Change some type comparisons to isinstance() calls:
+    type(x) == T -> isinstance(x, T)
+    type(x) is T -> isinstance(x, T)
+    type(x) != T -> not isinstance(x, T)
+    type(x) is not T -> not isinstance(x, T)
+
+* Change "while 1:" into "while True:".
+
+* Change both
+
+    v = list(EXPR)
+    v.sort()
+    foo(v)
+
+and the more general
+
+    v = EXPR
+    v.sort()
+    foo(v)
+
+into
+
+    v = sorted(EXPR)
+    foo(v)
+"""
+# Author: Jacques Frechet, Collin Winter
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Call, Comma, Name, Node, BlankLine, syms
+
+CMP = "(n='!=' | '==' | 'is' | n=comp_op< 'is' 'not' >)"
+TYPE = "power< 'type' trailer< '(' x=any ')' > >"
+
+class FixIdioms(fixer_base.BaseFix):
+    explicit = True # The user must ask for this fixer
+
+    PATTERN = r"""
+        isinstance=comparison< %s %s T=any >
+        |
+        isinstance=comparison< T=any %s %s >
+        |
+        while_stmt< 'while' while='1' ':' any+ >
+        |
+        sorted=any<
+            any*
+            simple_stmt<
+              expr_stmt< id1=any '='
+                         power< list='list' trailer< '(' (not arglist<any+>) any ')' > >
+              >
+              '\n'
+            >
+            sort=
+            simple_stmt<
+              power< id2=any
+                     trailer< '.' 'sort' > trailer< '(' ')' >
+              >
+              '\n'
+            >
+            next=any*
+        >
+        |
+        sorted=any<
+            any*
+            simple_stmt< expr_stmt< id1=any '=' expr=any > '\n' >
+            sort=
+            simple_stmt<
+              power< id2=any
+                     trailer< '.' 'sort' > trailer< '(' ')' >
+              >
+              '\n'
+            >
+            next=any*
+        >
+    """ % (TYPE, CMP, CMP, TYPE)
+
+    def match(self, node):
+        r = super(FixIdioms, self).match(node)
+        # If we've matched one of the sort/sorted subpatterns above, we
+        # want to reject matches where the initial assignment and the
+        # subsequent .sort() call involve different identifiers.
+        if r and "sorted" in r:
+            if r["id1"] == r["id2"]:
+                return r
+            return None
+        return r
+
+    def transform(self, node, results):
+        if "isinstance" in results:
+            return self.transform_isinstance(node, results)
+        elif "while" in results:
+            return self.transform_while(node, results)
+        elif "sorted" in results:
+            return self.transform_sort(node, results)
+        else:
+            raise RuntimeError("Invalid match")
+
+    def transform_isinstance(self, node, results):
+        x = results["x"].clone() # The thing inside of type()
+        T = results["T"].clone() # The type being compared against
+        x.prefix = ""
+        T.prefix = " "
+        test = Call(Name("isinstance"), [x, Comma(), T])
+        if "n" in results:
+            test.prefix = " "
+            test = Node(syms.not_test, [Name("not"), test])
+        test.prefix = node.prefix
+        return test
+
+    def transform_while(self, node, results):
+        one = results["while"]
+        one.replace(Name("True", prefix=one.prefix))
+
+    def transform_sort(self, node, results):
+        sort_stmt = results["sort"]
+        next_stmt = results["next"]
+        list_call = results.get("list")
+        simple_expr = results.get("expr")
+
+        if list_call:
+            list_call.replace(Name("sorted", prefix=list_call.prefix))
+        elif simple_expr:
+            new = simple_expr.clone()
+            new.prefix = ""
+            simple_expr.replace(Call(Name("sorted"), [new],
+                                     prefix=simple_expr.prefix))
+        else:
+            raise RuntimeError("should not have reached here")
+        sort_stmt.remove()
+
+        btwn = sort_stmt.prefix
+        # Keep any prefix lines between the sort_stmt and the list_call and
+        # shove them right after the sorted() call.
+        if "\n" in btwn:
+            if next_stmt:
+                # The new prefix should be everything from the sort_stmt's
+                # prefix up to the last newline, then the old prefix after a new
+                # line.
+                prefix_lines = (btwn.rpartition("\n")[0], next_stmt[0].prefix)
+                next_stmt[0].prefix = "\n".join(prefix_lines)
+            else:
+                assert list_call.parent
+                assert list_call.next_sibling is None
+                # Put a blank line after list_call and set its prefix.
+                end_line = BlankLine()
+                list_call.parent.append_child(end_line)
+                assert list_call.next_sibling is end_line
+                # The new prefix should be everything up to the first new line
+                # of sort_stmt's prefix.
+                end_line.prefix = btwn.rpartition("\n")[0]
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_import.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_import.py
new file mode 100644
index 0000000..734ca29
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_import.py
@@ -0,0 +1,99 @@
+"""Fixer for import statements.
+If spam is being imported from the local directory, this import:
+    from spam import eggs
+Becomes:
+    from .spam import eggs
+
+And this import:
+    import spam
+Becomes:
+    from . import spam
+"""
+
+# Local imports
+from .. import fixer_base
+from os.path import dirname, join, exists, sep
+from ..fixer_util import FromImport, syms, token
+
+
+def traverse_imports(names):
+    """
+    Walks over all the names imported in a dotted_as_names node.
+    """
+    pending = [names]
+    while pending:
+        node = pending.pop()
+        if node.type == token.NAME:
+            yield node.value
+        elif node.type == syms.dotted_name:
+            yield "".join([ch.value for ch in node.children])
+        elif node.type == syms.dotted_as_name:
+            pending.append(node.children[0])
+        elif node.type == syms.dotted_as_names:
+            pending.extend(node.children[::-2])
+        else:
+            raise AssertionError("unknown node type")
+
+
+class FixImport(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+    import_from< 'from' imp=any 'import' ['('] any [')'] >
+    |
+    import_name< 'import' imp=any >
+    """
+
+    def start_tree(self, tree, name):
+        super(FixImport, self).start_tree(tree, name)
+        self.skip = "absolute_import" in tree.future_features
+
+    def transform(self, node, results):
+        if self.skip:
+            return
+        imp = results['imp']
+
+        if node.type == syms.import_from:
+            # Some imps are top-level (eg: 'import ham')
+            # some are first level (eg: 'import ham.eggs')
+            # some are third level (eg: 'import ham.eggs as spam')
+            # Hence, the loop
+            while not hasattr(imp, 'value'):
+                imp = imp.children[0]
+            if self.probably_a_local_import(imp.value):
+                imp.value = "." + imp.value
+                imp.changed()
+        else:
+            have_local = False
+            have_absolute = False
+            for mod_name in traverse_imports(imp):
+                if self.probably_a_local_import(mod_name):
+                    have_local = True
+                else:
+                    have_absolute = True
+            if have_absolute:
+                if have_local:
+                    # We won't handle both sibling and absolute imports in the
+                    # same statement at the moment.
+                    self.warning(node, "absolute and local imports together")
+                return
+
+            new = FromImport(".", [imp])
+            new.prefix = node.prefix
+            return new
+
+    def probably_a_local_import(self, imp_name):
+        if imp_name.startswith("."):
+            # Relative imports are certainly not local imports.
+            return False
+        imp_name = imp_name.split(".", 1)[0]
+        base_path = dirname(self.filename)
+        base_path = join(base_path, imp_name)
+        # If there is no __init__.py next to the file its not in a package
+        # so can't be a relative import.
+        if not exists(join(dirname(base_path), "__init__.py")):
+            return False
+        for ext in [".py", sep, ".pyc", ".so", ".sl", ".pyd"]:
+            if exists(base_path + ext):
+                return True
+        return False
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_imports.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_imports.py
new file mode 100644
index 0000000..aaf4f2f
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_imports.py
@@ -0,0 +1,145 @@
+"""Fix incompatible imports and module references."""
+# Authors: Collin Winter, Nick Edds
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name, attr_chain
+
+MAPPING = {'StringIO':  'io',
+           'cStringIO': 'io',
+           'cPickle': 'pickle',
+           '__builtin__' : 'builtins',
+           'copy_reg': 'copyreg',
+           'Queue': 'queue',
+           'SocketServer': 'socketserver',
+           'ConfigParser': 'configparser',
+           'repr': 'reprlib',
+           'FileDialog': 'tkinter.filedialog',
+           'tkFileDialog': 'tkinter.filedialog',
+           'SimpleDialog': 'tkinter.simpledialog',
+           'tkSimpleDialog': 'tkinter.simpledialog',
+           'tkColorChooser': 'tkinter.colorchooser',
+           'tkCommonDialog': 'tkinter.commondialog',
+           'Dialog': 'tkinter.dialog',
+           'Tkdnd': 'tkinter.dnd',
+           'tkFont': 'tkinter.font',
+           'tkMessageBox': 'tkinter.messagebox',
+           'ScrolledText': 'tkinter.scrolledtext',
+           'Tkconstants': 'tkinter.constants',
+           'Tix': 'tkinter.tix',
+           'ttk': 'tkinter.ttk',
+           'Tkinter': 'tkinter',
+           'markupbase': '_markupbase',
+           '_winreg': 'winreg',
+           'thread': '_thread',
+           'dummy_thread': '_dummy_thread',
+           # anydbm and whichdb are handled by fix_imports2
+           'dbhash': 'dbm.bsd',
+           'dumbdbm': 'dbm.dumb',
+           'dbm': 'dbm.ndbm',
+           'gdbm': 'dbm.gnu',
+           'xmlrpclib': 'xmlrpc.client',
+           'DocXMLRPCServer': 'xmlrpc.server',
+           'SimpleXMLRPCServer': 'xmlrpc.server',
+           'httplib': 'http.client',
+           'htmlentitydefs' : 'html.entities',
+           'HTMLParser' : 'html.parser',
+           'Cookie': 'http.cookies',
+           'cookielib': 'http.cookiejar',
+           'BaseHTTPServer': 'http.server',
+           'SimpleHTTPServer': 'http.server',
+           'CGIHTTPServer': 'http.server',
+           #'test.test_support': 'test.support',
+           'commands': 'subprocess',
+           'UserString' : 'collections',
+           'UserList' : 'collections',
+           'urlparse' : 'urllib.parse',
+           'robotparser' : 'urllib.robotparser',
+}
+
+
+def alternates(members):
+    return "(" + "|".join(map(repr, members)) + ")"
+
+
+def build_pattern(mapping=MAPPING):
+    mod_list = ' | '.join(["module_name='%s'" % key for key in mapping])
+    bare_names = alternates(mapping.keys())
+
+    yield """name_import=import_name< 'import' ((%s) |
+               multiple_imports=dotted_as_names< any* (%s) any* >) >
+          """ % (mod_list, mod_list)
+    yield """import_from< 'from' (%s) 'import' ['(']
+              ( any | import_as_name< any 'as' any > |
+                import_as_names< any* >)  [')'] >
+          """ % mod_list
+    yield """import_name< 'import' (dotted_as_name< (%s) 'as' any > |
+               multiple_imports=dotted_as_names<
+                 any* dotted_as_name< (%s) 'as' any > any* >) >
+          """ % (mod_list, mod_list)
+
+    # Find usages of module members in code e.g. thread.foo(bar)
+    yield "power< bare_with_attr=(%s) trailer<'.' any > any* >" % bare_names
+
+
+class FixImports(fixer_base.BaseFix):
+
+    BM_compatible = True
+    keep_line_order = True
+    # This is overridden in fix_imports2.
+    mapping = MAPPING
+
+    # We want to run this fixer late, so fix_import doesn't try to make stdlib
+    # renames into relative imports.
+    run_order = 6
+
+    def build_pattern(self):
+        return "|".join(build_pattern(self.mapping))
+
+    def compile_pattern(self):
+        # We override this, so MAPPING can be pragmatically altered and the
+        # changes will be reflected in PATTERN.
+        self.PATTERN = self.build_pattern()
+        super(FixImports, self).compile_pattern()
+
+    # Don't match the node if it's within another match.
+    def match(self, node):
+        match = super(FixImports, self).match
+        results = match(node)
+        if results:
+            # Module usage could be in the trailer of an attribute lookup, so we
+            # might have nested matches when "bare_with_attr" is present.
+            if "bare_with_attr" not in results and \
+                    any(match(obj) for obj in attr_chain(node, "parent")):
+                return False
+            return results
+        return False
+
+    def start_tree(self, tree, filename):
+        super(FixImports, self).start_tree(tree, filename)
+        self.replace = {}
+
+    def transform(self, node, results):
+        import_mod = results.get("module_name")
+        if import_mod:
+            mod_name = import_mod.value
+            new_name = self.mapping[mod_name]
+            import_mod.replace(Name(new_name, prefix=import_mod.prefix))
+            if "name_import" in results:
+                # If it's not a "from x import x, y" or "import x as y" import,
+                # marked its usage to be replaced.
+                self.replace[mod_name] = new_name
+            if "multiple_imports" in results:
+                # This is a nasty hack to fix multiple imports on a line (e.g.,
+                # "import StringIO, urlparse"). The problem is that I can't
+                # figure out an easy way to make a pattern recognize the keys of
+                # MAPPING randomly sprinkled in an import statement.
+                results = self.match(node)
+                if results:
+                    self.transform(node, results)
+        else:
+            # Replace usage of the module.
+            bare_name = results["bare_with_attr"][0]
+            new_name = self.replace.get(bare_name.value)
+            if new_name:
+                bare_name.replace(Name(new_name, prefix=bare_name.prefix))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_imports2.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_imports2.py
new file mode 100644
index 0000000..9a33c67
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_imports2.py
@@ -0,0 +1,16 @@
+"""Fix incompatible imports and module references that must be fixed after
+fix_imports."""
+from . import fix_imports
+
+
+MAPPING = {
+            'whichdb': 'dbm',
+            'anydbm': 'dbm',
+          }
+
+
+class FixImports2(fix_imports.FixImports):
+
+    run_order = 7
+
+    mapping = MAPPING
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_input.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_input.py
new file mode 100644
index 0000000..9cf9a48
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_input.py
@@ -0,0 +1,26 @@
+"""Fixer that changes input(...) into eval(input(...))."""
+# Author: Andre Roberge
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Call, Name
+from .. import patcomp
+
+
+context = patcomp.compile_pattern("power< 'eval' trailer< '(' any ')' > >")
+
+
+class FixInput(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+              power< 'input' args=trailer< '(' [any] ')' > >
+              """
+
+    def transform(self, node, results):
+        # If we're already wrapped in an eval() call, we're done.
+        if context.match(node.parent.parent):
+            return
+
+        new = node.clone()
+        new.prefix = ""
+        return Call(Name("eval"), [new], prefix=node.prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_intern.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_intern.py
new file mode 100644
index 0000000..d752843
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_intern.py
@@ -0,0 +1,39 @@
+# Copyright 2006 Georg Brandl.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for intern().
+
+intern(s) -> sys.intern(s)"""
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import ImportAndCall, touch_import
+
+
+class FixIntern(fixer_base.BaseFix):
+    BM_compatible = True
+    order = "pre"
+
+    PATTERN = """
+    power< 'intern'
+           trailer< lpar='('
+                    ( not(arglist | argument<any '=' any>) obj=any
+                      | obj=arglist<(not argument<any '=' any>) any ','> )
+                    rpar=')' >
+           after=any*
+    >
+    """
+
+    def transform(self, node, results):
+        if results:
+            # I feel like we should be able to express this logic in the
+            # PATTERN above but I don't know how to do it so...
+            obj = results['obj']
+            if obj:
+                if (obj.type == self.syms.argument and
+                    obj.children[0].value in {'**', '*'}):
+                    return  # Make no change.
+        names = ('sys', 'intern')
+        new = ImportAndCall(node, results, names)
+        touch_import(None, 'sys', node)
+        return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_isinstance.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_isinstance.py
new file mode 100644
index 0000000..bebb1de
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_isinstance.py
@@ -0,0 +1,52 @@
+# Copyright 2008 Armin Ronacher.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer that cleans up a tuple argument to isinstance after the tokens
+in it were fixed.  This is mainly used to remove double occurrences of
+tokens as a leftover of the long -> int / unicode -> str conversion.
+
+eg.  isinstance(x, (int, long)) -> isinstance(x, (int, int))
+       -> isinstance(x, int)
+"""
+
+from .. import fixer_base
+from ..fixer_util import token
+
+
+class FixIsinstance(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+    power<
+        'isinstance'
+        trailer< '(' arglist< any ',' atom< '('
+            args=testlist_gexp< any+ >
+        ')' > > ')' >
+    >
+    """
+
+    run_order = 6
+
+    def transform(self, node, results):
+        names_inserted = set()
+        testlist = results["args"]
+        args = testlist.children
+        new_args = []
+        iterator = enumerate(args)
+        for idx, arg in iterator:
+            if arg.type == token.NAME and arg.value in names_inserted:
+                if idx < len(args) - 1 and args[idx + 1].type == token.COMMA:
+                    next(iterator)
+                    continue
+            else:
+                new_args.append(arg)
+                if arg.type == token.NAME:
+                    names_inserted.add(arg.value)
+        if new_args and new_args[-1].type == token.COMMA:
+            del new_args[-1]
+        if len(new_args) == 1:
+            atom = testlist.parent
+            new_args[0].prefix = atom.prefix
+            atom.replace(new_args[0])
+        else:
+            args[:] = new_args
+            node.changed()
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_itertools.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_itertools.py
new file mode 100644
index 0000000..8e78d6c
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_itertools.py
@@ -0,0 +1,43 @@
+""" Fixer for itertools.(imap|ifilter|izip) --> (map|filter|zip) and
+    itertools.ifilterfalse --> itertools.filterfalse (bugs 2360-2363)
+
+    imports from itertools are fixed in fix_itertools_import.py
+
+    If itertools is imported as something else (ie: import itertools as it;
+    it.izip(spam, eggs)) method calls will not get fixed.
+    """
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+class FixItertools(fixer_base.BaseFix):
+    BM_compatible = True
+    it_funcs = "('imap'|'ifilter'|'izip'|'izip_longest'|'ifilterfalse')"
+    PATTERN = """
+              power< it='itertools'
+                  trailer<
+                     dot='.' func=%(it_funcs)s > trailer< '(' [any] ')' > >
+              |
+              power< func=%(it_funcs)s trailer< '(' [any] ')' > >
+              """ %(locals())
+
+    # Needs to be run after fix_(map|zip|filter)
+    run_order = 6
+
+    def transform(self, node, results):
+        prefix = None
+        func = results['func'][0]
+        if ('it' in results and
+            func.value not in ('ifilterfalse', 'izip_longest')):
+            dot, it = (results['dot'], results['it'])
+            # Remove the 'itertools'
+            prefix = it.prefix
+            it.remove()
+            # Replace the node which contains ('.', 'function') with the
+            # function (to be consistent with the second part of the pattern)
+            dot.remove()
+            func.parent.replace(func)
+
+        prefix = prefix or func.prefix
+        func.replace(Name(func.value[1:], prefix=prefix))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_itertools_imports.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_itertools_imports.py
new file mode 100644
index 0000000..0ddbc7b
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_itertools_imports.py
@@ -0,0 +1,57 @@
+""" Fixer for imports of itertools.(imap|ifilter|izip|ifilterfalse) """
+
+# Local imports
+from lib2to3 import fixer_base
+from lib2to3.fixer_util import BlankLine, syms, token
+
+
+class FixItertoolsImports(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+              import_from< 'from' 'itertools' 'import' imports=any >
+              """ %(locals())
+
+    def transform(self, node, results):
+        imports = results['imports']
+        if imports.type == syms.import_as_name or not imports.children:
+            children = [imports]
+        else:
+            children = imports.children
+        for child in children[::2]:
+            if child.type == token.NAME:
+                member = child.value
+                name_node = child
+            elif child.type == token.STAR:
+                # Just leave the import as is.
+                return
+            else:
+                assert child.type == syms.import_as_name
+                name_node = child.children[0]
+            member_name = name_node.value
+            if member_name in ('imap', 'izip', 'ifilter'):
+                child.value = None
+                child.remove()
+            elif member_name in ('ifilterfalse', 'izip_longest'):
+                node.changed()
+                name_node.value = ('filterfalse' if member_name[1] == 'f'
+                                   else 'zip_longest')
+
+        # Make sure the import statement is still sane
+        children = imports.children[:] or [imports]
+        remove_comma = True
+        for child in children:
+            if remove_comma and child.type == token.COMMA:
+                child.remove()
+            else:
+                remove_comma ^= True
+
+        while children and children[-1].type == token.COMMA:
+            children.pop().remove()
+
+        # If there are no imports left, just get rid of the entire statement
+        if (not (imports.children or getattr(imports, 'value', None)) or
+            imports.parent is None):
+            p = node.prefix
+            node = BlankLine()
+            node.prefix = p
+            return node
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_long.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_long.py
new file mode 100644
index 0000000..f227c9f
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_long.py
@@ -0,0 +1,19 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer that turns 'long' into 'int' everywhere.
+"""
+
+# Local imports
+from lib2to3 import fixer_base
+from lib2to3.fixer_util import is_probably_builtin
+
+
+class FixLong(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = "'long'"
+
+    def transform(self, node, results):
+        if is_probably_builtin(node):
+            node.value = "int"
+            node.changed()
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_map.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_map.py
new file mode 100644
index 0000000..78cf81c
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_map.py
@@ -0,0 +1,110 @@
+# Copyright 2007 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer that changes map(F, ...) into list(map(F, ...)) unless there
+exists a 'from future_builtins import map' statement in the top-level
+namespace.
+
+As a special case, map(None, X) is changed into list(X).  (This is
+necessary because the semantics are changed in this case -- the new
+map(None, X) is equivalent to [(x,) for x in X].)
+
+We avoid the transformation (except for the special case mentioned
+above) if the map() call is directly contained in iter(<>), list(<>),
+tuple(<>), sorted(<>), ...join(<>), or for V in <>:.
+
+NOTE: This is still not correct if the original code was depending on
+map(F, X, Y, ...) to go on until the longest argument is exhausted,
+substituting None for missing values -- like zip(), it now stops as
+soon as the shortest argument is exhausted.
+"""
+
+# Local imports
+from ..pgen2 import token
+from .. import fixer_base
+from ..fixer_util import Name, ArgList, Call, ListComp, in_special_context
+from ..pygram import python_symbols as syms
+from ..pytree import Node
+
+
+class FixMap(fixer_base.ConditionalFix):
+    BM_compatible = True
+
+    PATTERN = """
+    map_none=power<
+        'map'
+        trailer< '(' arglist< 'None' ',' arg=any [','] > ')' >
+        [extra_trailers=trailer*]
+    >
+    |
+    map_lambda=power<
+        'map'
+        trailer<
+            '('
+            arglist<
+                lambdef< 'lambda'
+                         (fp=NAME | vfpdef< '(' fp=NAME ')'> ) ':' xp=any
+                >
+                ','
+                it=any
+            >
+            ')'
+        >
+        [extra_trailers=trailer*]
+    >
+    |
+    power<
+        'map' args=trailer< '(' [any] ')' >
+        [extra_trailers=trailer*]
+    >
+    """
+
+    skip_on = 'future_builtins.map'
+
+    def transform(self, node, results):
+        if self.should_skip(node):
+            return
+
+        trailers = []
+        if 'extra_trailers' in results:
+            for t in results['extra_trailers']:
+                trailers.append(t.clone())
+
+        if node.parent.type == syms.simple_stmt:
+            self.warning(node, "You should use a for loop here")
+            new = node.clone()
+            new.prefix = ""
+            new = Call(Name("list"), [new])
+        elif "map_lambda" in results:
+            new = ListComp(results["xp"].clone(),
+                           results["fp"].clone(),
+                           results["it"].clone())
+            new = Node(syms.power, [new] + trailers, prefix="")
+
+        else:
+            if "map_none" in results:
+                new = results["arg"].clone()
+                new.prefix = ""
+            else:
+                if "args" in results:
+                    args = results["args"]
+                    if args.type == syms.trailer and \
+                       args.children[1].type == syms.arglist and \
+                       args.children[1].children[0].type == token.NAME and \
+                       args.children[1].children[0].value == "None":
+                        self.warning(node, "cannot convert map(None, ...) "
+                                     "with multiple arguments because map() "
+                                     "now truncates to the shortest sequence")
+                        return
+
+                    new = Node(syms.power, [Name("map"), args.clone()])
+                    new.prefix = ""
+
+                if in_special_context(node):
+                    return None
+
+            new = Node(syms.power, [Name("list"), ArgList([new])] + trailers)
+            new.prefix = ""
+
+        new.prefix = node.prefix
+        return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_metaclass.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_metaclass.py
new file mode 100644
index 0000000..d1cd10d
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_metaclass.py
@@ -0,0 +1,228 @@
+"""Fixer for __metaclass__ = X -> (metaclass=X) methods.
+
+   The various forms of classef (inherits nothing, inherits once, inherits
+   many) don't parse the same in the CST so we look at ALL classes for
+   a __metaclass__ and if we find one normalize the inherits to all be
+   an arglist.
+
+   For one-liner classes ('class X: pass') there is no indent/dedent so
+   we normalize those into having a suite.
+
+   Moving the __metaclass__ into the classdef can also cause the class
+   body to be empty so there is some special casing for that as well.
+
+   This fixer also tries very hard to keep original indenting and spacing
+   in all those corner cases.
+
+"""
+# Author: Jack Diederich
+
+# Local imports
+from .. import fixer_base
+from ..pygram import token
+from ..fixer_util import syms, Node, Leaf
+
+
+def has_metaclass(parent):
+    """ we have to check the cls_node without changing it.
+        There are two possibilities:
+          1)  clsdef => suite => simple_stmt => expr_stmt => Leaf('__meta')
+          2)  clsdef => simple_stmt => expr_stmt => Leaf('__meta')
+    """
+    for node in parent.children:
+        if node.type == syms.suite:
+            return has_metaclass(node)
+        elif node.type == syms.simple_stmt and node.children:
+            expr_node = node.children[0]
+            if expr_node.type == syms.expr_stmt and expr_node.children:
+                left_side = expr_node.children[0]
+                if isinstance(left_side, Leaf) and \
+                        left_side.value == '__metaclass__':
+                    return True
+    return False
+
+
+def fixup_parse_tree(cls_node):
+    """ one-line classes don't get a suite in the parse tree so we add
+        one to normalize the tree
+    """
+    for node in cls_node.children:
+        if node.type == syms.suite:
+            # already in the preferred format, do nothing
+            return
+
+    # !%@#! oneliners have no suite node, we have to fake one up
+    for i, node in enumerate(cls_node.children):
+        if node.type == token.COLON:
+            break
+    else:
+        raise ValueError("No class suite and no ':'!")
+
+    # move everything into a suite node
+    suite = Node(syms.suite, [])
+    while cls_node.children[i+1:]:
+        move_node = cls_node.children[i+1]
+        suite.append_child(move_node.clone())
+        move_node.remove()
+    cls_node.append_child(suite)
+    node = suite
+
+
+def fixup_simple_stmt(parent, i, stmt_node):
+    """ if there is a semi-colon all the parts count as part of the same
+        simple_stmt.  We just want the __metaclass__ part so we move
+        everything after the semi-colon into its own simple_stmt node
+    """
+    for semi_ind, node in enumerate(stmt_node.children):
+        if node.type == token.SEMI: # *sigh*
+            break
+    else:
+        return
+
+    node.remove() # kill the semicolon
+    new_expr = Node(syms.expr_stmt, [])
+    new_stmt = Node(syms.simple_stmt, [new_expr])
+    while stmt_node.children[semi_ind:]:
+        move_node = stmt_node.children[semi_ind]
+        new_expr.append_child(move_node.clone())
+        move_node.remove()
+    parent.insert_child(i, new_stmt)
+    new_leaf1 = new_stmt.children[0].children[0]
+    old_leaf1 = stmt_node.children[0].children[0]
+    new_leaf1.prefix = old_leaf1.prefix
+
+
+def remove_trailing_newline(node):
+    if node.children and node.children[-1].type == token.NEWLINE:
+        node.children[-1].remove()
+
+
+def find_metas(cls_node):
+    # find the suite node (Mmm, sweet nodes)
+    for node in cls_node.children:
+        if node.type == syms.suite:
+            break
+    else:
+        raise ValueError("No class suite!")
+
+    # look for simple_stmt[ expr_stmt[ Leaf('__metaclass__') ] ]
+    for i, simple_node in list(enumerate(node.children)):
+        if simple_node.type == syms.simple_stmt and simple_node.children:
+            expr_node = simple_node.children[0]
+            if expr_node.type == syms.expr_stmt and expr_node.children:
+                # Check if the expr_node is a simple assignment.
+                left_node = expr_node.children[0]
+                if isinstance(left_node, Leaf) and \
+                        left_node.value == '__metaclass__':
+                    # We found an assignment to __metaclass__.
+                    fixup_simple_stmt(node, i, simple_node)
+                    remove_trailing_newline(simple_node)
+                    yield (node, i, simple_node)
+
+
+def fixup_indent(suite):
+    """ If an INDENT is followed by a thing with a prefix then nuke the prefix
+        Otherwise we get in trouble when removing __metaclass__ at suite start
+    """
+    kids = suite.children[::-1]
+    # find the first indent
+    while kids:
+        node = kids.pop()
+        if node.type == token.INDENT:
+            break
+
+    # find the first Leaf
+    while kids:
+        node = kids.pop()
+        if isinstance(node, Leaf) and node.type != token.DEDENT:
+            if node.prefix:
+                node.prefix = ''
+            return
+        else:
+            kids.extend(node.children[::-1])
+
+
+class FixMetaclass(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+    classdef<any*>
+    """
+
+    def transform(self, node, results):
+        if not has_metaclass(node):
+            return
+
+        fixup_parse_tree(node)
+
+        # find metaclasses, keep the last one
+        last_metaclass = None
+        for suite, i, stmt in find_metas(node):
+            last_metaclass = stmt
+            stmt.remove()
+
+        text_type = node.children[0].type # always Leaf(nnn, 'class')
+
+        # figure out what kind of classdef we have
+        if len(node.children) == 7:
+            # Node(classdef, ['class', 'name', '(', arglist, ')', ':', suite])
+            #                 0        1       2    3        4    5    6
+            if node.children[3].type == syms.arglist:
+                arglist = node.children[3]
+            # Node(classdef, ['class', 'name', '(', 'Parent', ')', ':', suite])
+            else:
+                parent = node.children[3].clone()
+                arglist = Node(syms.arglist, [parent])
+                node.set_child(3, arglist)
+        elif len(node.children) == 6:
+            # Node(classdef, ['class', 'name', '(',  ')', ':', suite])
+            #                 0        1       2     3    4    5
+            arglist = Node(syms.arglist, [])
+            node.insert_child(3, arglist)
+        elif len(node.children) == 4:
+            # Node(classdef, ['class', 'name', ':', suite])
+            #                 0        1       2    3
+            arglist = Node(syms.arglist, [])
+            node.insert_child(2, Leaf(token.RPAR, ')'))
+            node.insert_child(2, arglist)
+            node.insert_child(2, Leaf(token.LPAR, '('))
+        else:
+            raise ValueError("Unexpected class definition")
+
+        # now stick the metaclass in the arglist
+        meta_txt = last_metaclass.children[0].children[0]
+        meta_txt.value = 'metaclass'
+        orig_meta_prefix = meta_txt.prefix
+
+        if arglist.children:
+            arglist.append_child(Leaf(token.COMMA, ','))
+            meta_txt.prefix = ' '
+        else:
+            meta_txt.prefix = ''
+
+        # compact the expression "metaclass = Meta" -> "metaclass=Meta"
+        expr_stmt = last_metaclass.children[0]
+        assert expr_stmt.type == syms.expr_stmt
+        expr_stmt.children[1].prefix = ''
+        expr_stmt.children[2].prefix = ''
+
+        arglist.append_child(last_metaclass)
+
+        fixup_indent(suite)
+
+        # check for empty suite
+        if not suite.children:
+            # one-liner that was just __metaclass_
+            suite.remove()
+            pass_leaf = Leaf(text_type, 'pass')
+            pass_leaf.prefix = orig_meta_prefix
+            node.append_child(pass_leaf)
+            node.append_child(Leaf(token.NEWLINE, '\n'))
+
+        elif len(suite.children) > 1 and \
+                 (suite.children[-2].type == token.INDENT and
+                  suite.children[-1].type == token.DEDENT):
+            # there was only one line in the class body and it was __metaclass__
+            pass_leaf = Leaf(text_type, 'pass')
+            suite.insert_child(-1, pass_leaf)
+            suite.insert_child(-1, Leaf(token.NEWLINE, '\n'))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_methodattrs.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_methodattrs.py
new file mode 100644
index 0000000..7f9004f
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_methodattrs.py
@@ -0,0 +1,24 @@
+"""Fix bound method attributes (method.im_? -> method.__?__).
+"""
+# Author: Christian Heimes
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+MAP = {
+    "im_func" : "__func__",
+    "im_self" : "__self__",
+    "im_class" : "__self__.__class__"
+    }
+
+class FixMethodattrs(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+    power< any+ trailer< '.' attr=('im_func' | 'im_self' | 'im_class') > any* >
+    """
+
+    def transform(self, node, results):
+        attr = results["attr"][0]
+        new = MAP[attr.value]
+        attr.replace(Name(new, prefix=attr.prefix))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_ne.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_ne.py
new file mode 100644
index 0000000..e3ee10f
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_ne.py
@@ -0,0 +1,23 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer that turns <> into !=."""
+
+# Local imports
+from .. import pytree
+from ..pgen2 import token
+from .. import fixer_base
+
+
+class FixNe(fixer_base.BaseFix):
+    # This is so simple that we don't need the pattern compiler.
+
+    _accept_type = token.NOTEQUAL
+
+    def match(self, node):
+        # Override
+        return node.value == "<>"
+
+    def transform(self, node, results):
+        new = pytree.Leaf(token.NOTEQUAL, "!=", prefix=node.prefix)
+        return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_next.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_next.py
new file mode 100644
index 0000000..9f6305e
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_next.py
@@ -0,0 +1,103 @@
+"""Fixer for it.next() -> next(it), per PEP 3114."""
+# Author: Collin Winter
+
+# Things that currently aren't covered:
+#   - listcomp "next" names aren't warned
+#   - "with" statement targets aren't checked
+
+# Local imports
+from ..pgen2 import token
+from ..pygram import python_symbols as syms
+from .. import fixer_base
+from ..fixer_util import Name, Call, find_binding
+
+bind_warning = "Calls to builtin next() possibly shadowed by global binding"
+
+
+class FixNext(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+    power< base=any+ trailer< '.' attr='next' > trailer< '(' ')' > >
+    |
+    power< head=any+ trailer< '.' attr='next' > not trailer< '(' ')' > >
+    |
+    classdef< 'class' any+ ':'
+              suite< any*
+                     funcdef< 'def'
+                              name='next'
+                              parameters< '(' NAME ')' > any+ >
+                     any* > >
+    |
+    global=global_stmt< 'global' any* 'next' any* >
+    """
+
+    order = "pre" # Pre-order tree traversal
+
+    def start_tree(self, tree, filename):
+        super(FixNext, self).start_tree(tree, filename)
+
+        n = find_binding('next', tree)
+        if n:
+            self.warning(n, bind_warning)
+            self.shadowed_next = True
+        else:
+            self.shadowed_next = False
+
+    def transform(self, node, results):
+        assert results
+
+        base = results.get("base")
+        attr = results.get("attr")
+        name = results.get("name")
+
+        if base:
+            if self.shadowed_next:
+                attr.replace(Name("__next__", prefix=attr.prefix))
+            else:
+                base = [n.clone() for n in base]
+                base[0].prefix = ""
+                node.replace(Call(Name("next", prefix=node.prefix), base))
+        elif name:
+            n = Name("__next__", prefix=name.prefix)
+            name.replace(n)
+        elif attr:
+            # We don't do this transformation if we're assigning to "x.next".
+            # Unfortunately, it doesn't seem possible to do this in PATTERN,
+            #  so it's being done here.
+            if is_assign_target(node):
+                head = results["head"]
+                if "".join([str(n) for n in head]).strip() == '__builtin__':
+                    self.warning(node, bind_warning)
+                return
+            attr.replace(Name("__next__"))
+        elif "global" in results:
+            self.warning(node, bind_warning)
+            self.shadowed_next = True
+
+
+### The following functions help test if node is part of an assignment
+###  target.
+
+def is_assign_target(node):
+    assign = find_assign(node)
+    if assign is None:
+        return False
+
+    for child in assign.children:
+        if child.type == token.EQUAL:
+            return False
+        elif is_subtree(child, node):
+            return True
+    return False
+
+def find_assign(node):
+    if node.type == syms.expr_stmt:
+        return node
+    if node.type == syms.simple_stmt or node.parent is None:
+        return None
+    return find_assign(node.parent)
+
+def is_subtree(root, node):
+    if root == node:
+        return True
+    return any(is_subtree(c, node) for c in root.children)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_nonzero.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_nonzero.py
new file mode 100644
index 0000000..c229596
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_nonzero.py
@@ -0,0 +1,21 @@
+"""Fixer for __nonzero__ -> __bool__ methods."""
+# Author: Collin Winter
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+class FixNonzero(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+    classdef< 'class' any+ ':'
+              suite< any*
+                     funcdef< 'def' name='__nonzero__'
+                              parameters< '(' NAME ')' > any+ >
+                     any* > >
+    """
+
+    def transform(self, node, results):
+        name = results["name"]
+        new = Name("__bool__", prefix=name.prefix)
+        name.replace(new)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_numliterals.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_numliterals.py
new file mode 100644
index 0000000..79207d4
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_numliterals.py
@@ -0,0 +1,28 @@
+"""Fixer that turns 1L into 1, 0755 into 0o755.
+"""
+# Copyright 2007 Georg Brandl.
+# Licensed to PSF under a Contributor Agreement.
+
+# Local imports
+from ..pgen2 import token
+from .. import fixer_base
+from ..fixer_util import Number
+
+
+class FixNumliterals(fixer_base.BaseFix):
+    # This is so simple that we don't need the pattern compiler.
+
+    _accept_type = token.NUMBER
+
+    def match(self, node):
+        # Override
+        return (node.value.startswith("0") or node.value[-1] in "Ll")
+
+    def transform(self, node, results):
+        val = node.value
+        if val[-1] in 'Ll':
+            val = val[:-1]
+        elif val.startswith('0') and val.isdigit() and len(set(val)) > 1:
+            val = "0o" + val[1:]
+
+        return Number(val, prefix=node.prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_operator.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_operator.py
new file mode 100644
index 0000000..d303cd2
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_operator.py
@@ -0,0 +1,97 @@
+"""Fixer for operator functions.
+
+operator.isCallable(obj)       -> callable(obj)
+operator.sequenceIncludes(obj) -> operator.contains(obj)
+operator.isSequenceType(obj)   -> isinstance(obj, collections.abc.Sequence)
+operator.isMappingType(obj)    -> isinstance(obj, collections.abc.Mapping)
+operator.isNumberType(obj)     -> isinstance(obj, numbers.Number)
+operator.repeat(obj, n)        -> operator.mul(obj, n)
+operator.irepeat(obj, n)       -> operator.imul(obj, n)
+"""
+
+import collections.abc
+
+# Local imports
+from lib2to3 import fixer_base
+from lib2to3.fixer_util import Call, Name, String, touch_import
+
+
+def invocation(s):
+    def dec(f):
+        f.invocation = s
+        return f
+    return dec
+
+
+class FixOperator(fixer_base.BaseFix):
+    BM_compatible = True
+    order = "pre"
+
+    methods = """
+              method=('isCallable'|'sequenceIncludes'
+                     |'isSequenceType'|'isMappingType'|'isNumberType'
+                     |'repeat'|'irepeat')
+              """
+    obj = "'(' obj=any ')'"
+    PATTERN = """
+              power< module='operator'
+                trailer< '.' %(methods)s > trailer< %(obj)s > >
+              |
+              power< %(methods)s trailer< %(obj)s > >
+              """ % dict(methods=methods, obj=obj)
+
+    def transform(self, node, results):
+        method = self._check_method(node, results)
+        if method is not None:
+            return method(node, results)
+
+    @invocation("operator.contains(%s)")
+    def _sequenceIncludes(self, node, results):
+        return self._handle_rename(node, results, "contains")
+
+    @invocation("callable(%s)")
+    def _isCallable(self, node, results):
+        obj = results["obj"]
+        return Call(Name("callable"), [obj.clone()], prefix=node.prefix)
+
+    @invocation("operator.mul(%s)")
+    def _repeat(self, node, results):
+        return self._handle_rename(node, results, "mul")
+
+    @invocation("operator.imul(%s)")
+    def _irepeat(self, node, results):
+        return self._handle_rename(node, results, "imul")
+
+    @invocation("isinstance(%s, collections.abc.Sequence)")
+    def _isSequenceType(self, node, results):
+        return self._handle_type2abc(node, results, "collections.abc", "Sequence")
+
+    @invocation("isinstance(%s, collections.abc.Mapping)")
+    def _isMappingType(self, node, results):
+        return self._handle_type2abc(node, results, "collections.abc", "Mapping")
+
+    @invocation("isinstance(%s, numbers.Number)")
+    def _isNumberType(self, node, results):
+        return self._handle_type2abc(node, results, "numbers", "Number")
+
+    def _handle_rename(self, node, results, name):
+        method = results["method"][0]
+        method.value = name
+        method.changed()
+
+    def _handle_type2abc(self, node, results, module, abc):
+        touch_import(None, module, node)
+        obj = results["obj"]
+        args = [obj.clone(), String(", " + ".".join([module, abc]))]
+        return Call(Name("isinstance"), args, prefix=node.prefix)
+
+    def _check_method(self, node, results):
+        method = getattr(self, "_" + results["method"][0].value)
+        if isinstance(method, collections.abc.Callable):
+            if "module" in results:
+                return method
+            else:
+                sub = (str(results["obj"]),)
+                invocation_str = method.invocation % sub
+                self.warning(node, "You should use '%s' here." % invocation_str)
+        return None
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_paren.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_paren.py
new file mode 100644
index 0000000..b205aa7
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_paren.py
@@ -0,0 +1,44 @@
+"""Fixer that addes parentheses where they are required
+
+This converts ``[x for x in 1, 2]`` to ``[x for x in (1, 2)]``."""
+
+# By Taek Joo Kim and Benjamin Peterson
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import LParen, RParen
+
+# XXX This doesn't support nested for loops like [x for x in 1, 2 for x in 1, 2]
+class FixParen(fixer_base.BaseFix):
+    BM_compatible = True
+
+    PATTERN = """
+        atom< ('[' | '(')
+            (listmaker< any
+                comp_for<
+                    'for' NAME 'in'
+                    target=testlist_safe< any (',' any)+ [',']
+                     >
+                    [any]
+                >
+            >
+            |
+            testlist_gexp< any
+                comp_for<
+                    'for' NAME 'in'
+                    target=testlist_safe< any (',' any)+ [',']
+                     >
+                    [any]
+                >
+            >)
+        (']' | ')') >
+    """
+
+    def transform(self, node, results):
+        target = results["target"]
+
+        lparen = LParen()
+        lparen.prefix = target.prefix
+        target.prefix = "" # Make it hug the parentheses
+        target.insert_child(0, lparen)
+        target.append_child(RParen())
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_print.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_print.py
new file mode 100644
index 0000000..8780322
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_print.py
@@ -0,0 +1,87 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for print.
+
+Change:
+    'print'          into 'print()'
+    'print ...'      into 'print(...)'
+    'print ... ,'    into 'print(..., end=" ")'
+    'print >>x, ...' into 'print(..., file=x)'
+
+No changes are applied if print_function is imported from __future__
+
+"""
+
+# Local imports
+from .. import patcomp
+from .. import pytree
+from ..pgen2 import token
+from .. import fixer_base
+from ..fixer_util import Name, Call, Comma, String
+
+
+parend_expr = patcomp.compile_pattern(
+              """atom< '(' [atom|STRING|NAME] ')' >"""
+              )
+
+
+class FixPrint(fixer_base.BaseFix):
+
+    BM_compatible = True
+
+    PATTERN = """
+              simple_stmt< any* bare='print' any* > | print_stmt
+              """
+
+    def transform(self, node, results):
+        assert results
+
+        bare_print = results.get("bare")
+
+        if bare_print:
+            # Special-case print all by itself
+            bare_print.replace(Call(Name("print"), [],
+                               prefix=bare_print.prefix))
+            return
+        assert node.children[0] == Name("print")
+        args = node.children[1:]
+        if len(args) == 1 and parend_expr.match(args[0]):
+            # We don't want to keep sticking parens around an
+            # already-parenthesised expression.
+            return
+
+        sep = end = file = None
+        if args and args[-1] == Comma():
+            args = args[:-1]
+            end = " "
+        if args and args[0] == pytree.Leaf(token.RIGHTSHIFT, ">>"):
+            assert len(args) >= 2
+            file = args[1].clone()
+            args = args[3:] # Strip a possible comma after the file expression
+        # Now synthesize a print(args, sep=..., end=..., file=...) node.
+        l_args = [arg.clone() for arg in args]
+        if l_args:
+            l_args[0].prefix = ""
+        if sep is not None or end is not None or file is not None:
+            if sep is not None:
+                self.add_kwarg(l_args, "sep", String(repr(sep)))
+            if end is not None:
+                self.add_kwarg(l_args, "end", String(repr(end)))
+            if file is not None:
+                self.add_kwarg(l_args, "file", file)
+        n_stmt = Call(Name("print"), l_args)
+        n_stmt.prefix = node.prefix
+        return n_stmt
+
+    def add_kwarg(self, l_nodes, s_kwd, n_expr):
+        # XXX All this prefix-setting may lose comments (though rarely)
+        n_expr.prefix = ""
+        n_argument = pytree.Node(self.syms.argument,
+                                 (Name(s_kwd),
+                                  pytree.Leaf(token.EQUAL, "="),
+                                  n_expr))
+        if l_nodes:
+            l_nodes.append(Comma())
+            n_argument.prefix = " "
+        l_nodes.append(n_argument)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_raise.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_raise.py
new file mode 100644
index 0000000..05aa21e
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_raise.py
@@ -0,0 +1,90 @@
+"""Fixer for 'raise E, V, T'
+
+raise         -> raise
+raise E       -> raise E
+raise E, V    -> raise E(V)
+raise E, V, T -> raise E(V).with_traceback(T)
+raise E, None, T -> raise E.with_traceback(T)
+
+raise (((E, E'), E''), E'''), V -> raise E(V)
+raise "foo", V, T               -> warns about string exceptions
+
+
+CAVEATS:
+1) "raise E, V" will be incorrectly translated if V is an exception
+   instance. The correct Python 3 idiom is
+
+        raise E from V
+
+   but since we can't detect instance-hood by syntax alone and since
+   any client code would have to be changed as well, we don't automate
+   this.
+"""
+# Author: Collin Winter
+
+# Local imports
+from .. import pytree
+from ..pgen2 import token
+from .. import fixer_base
+from ..fixer_util import Name, Call, Attr, ArgList, is_tuple
+
+class FixRaise(fixer_base.BaseFix):
+
+    BM_compatible = True
+    PATTERN = """
+    raise_stmt< 'raise' exc=any [',' val=any [',' tb=any]] >
+    """
+
+    def transform(self, node, results):
+        syms = self.syms
+
+        exc = results["exc"].clone()
+        if exc.type == token.STRING:
+            msg = "Python 3 does not support string exceptions"
+            self.cannot_convert(node, msg)
+            return
+
+        # Python 2 supports
+        #  raise ((((E1, E2), E3), E4), E5), V
+        # as a synonym for
+        #  raise E1, V
+        # Since Python 3 will not support this, we recurse down any tuple
+        # literals, always taking the first element.
+        if is_tuple(exc):
+            while is_tuple(exc):
+                # exc.children[1:-1] is the unparenthesized tuple
+                # exc.children[1].children[0] is the first element of the tuple
+                exc = exc.children[1].children[0].clone()
+            exc.prefix = " "
+
+        if "val" not in results:
+            # One-argument raise
+            new = pytree.Node(syms.raise_stmt, [Name("raise"), exc])
+            new.prefix = node.prefix
+            return new
+
+        val = results["val"].clone()
+        if is_tuple(val):
+            args = [c.clone() for c in val.children[1:-1]]
+        else:
+            val.prefix = ""
+            args = [val]
+
+        if "tb" in results:
+            tb = results["tb"].clone()
+            tb.prefix = ""
+
+            e = exc
+            # If there's a traceback and None is passed as the value, then don't
+            # add a call, since the user probably just wants to add a
+            # traceback. See issue #9661.
+            if val.type != token.NAME or val.value != "None":
+                e = Call(exc, args)
+            with_tb = Attr(e, Name('with_traceback')) + [ArgList([tb])]
+            new = pytree.Node(syms.simple_stmt, [Name("raise")] + with_tb)
+            new.prefix = node.prefix
+            return new
+        else:
+            return pytree.Node(syms.raise_stmt,
+                               [Name("raise"), Call(exc, args)],
+                               prefix=node.prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_raw_input.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_raw_input.py
new file mode 100644
index 0000000..a51bb69
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_raw_input.py
@@ -0,0 +1,17 @@
+"""Fixer that changes raw_input(...) into input(...)."""
+# Author: Andre Roberge
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+class FixRawInput(fixer_base.BaseFix):
+
+    BM_compatible = True
+    PATTERN = """
+              power< name='raw_input' trailer< '(' [any] ')' > any* >
+              """
+
+    def transform(self, node, results):
+        name = results["name"]
+        name.replace(Name("input", prefix=name.prefix))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_reduce.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_reduce.py
new file mode 100644
index 0000000..00e5aa1
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_reduce.py
@@ -0,0 +1,35 @@
+# Copyright 2008 Armin Ronacher.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for reduce().
+
+Makes sure reduce() is imported from the functools module if reduce is
+used in that module.
+"""
+
+from lib2to3 import fixer_base
+from lib2to3.fixer_util import touch_import
+
+
+
+class FixReduce(fixer_base.BaseFix):
+
+    BM_compatible = True
+    order = "pre"
+
+    PATTERN = """
+    power< 'reduce'
+        trailer< '('
+            arglist< (
+                (not(argument<any '=' any>) any ','
+                 not(argument<any '=' any>) any) |
+                (not(argument<any '=' any>) any ','
+                 not(argument<any '=' any>) any ','
+                 not(argument<any '=' any>) any)
+            ) >
+        ')' >
+    >
+    """
+
+    def transform(self, node, results):
+        touch_import('functools', 'reduce', node)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_reload.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_reload.py
new file mode 100644
index 0000000..b308411
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_reload.py
@@ -0,0 +1,36 @@
+"""Fixer for reload().
+
+reload(s) -> importlib.reload(s)"""
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import ImportAndCall, touch_import
+
+
+class FixReload(fixer_base.BaseFix):
+    BM_compatible = True
+    order = "pre"
+
+    PATTERN = """
+    power< 'reload'
+           trailer< lpar='('
+                    ( not(arglist | argument<any '=' any>) obj=any
+                      | obj=arglist<(not argument<any '=' any>) any ','> )
+                    rpar=')' >
+           after=any*
+    >
+    """
+
+    def transform(self, node, results):
+        if results:
+            # I feel like we should be able to express this logic in the
+            # PATTERN above but I don't know how to do it so...
+            obj = results['obj']
+            if obj:
+                if (obj.type == self.syms.argument and
+                    obj.children[0].value in {'**', '*'}):
+                    return  # Make no change.
+        names = ('importlib', 'reload')
+        new = ImportAndCall(node, results, names)
+        touch_import(None, 'importlib', node)
+        return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_renames.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_renames.py
new file mode 100644
index 0000000..c0e3705
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_renames.py
@@ -0,0 +1,70 @@
+"""Fix incompatible renames
+
+Fixes:
+  * sys.maxint -> sys.maxsize
+"""
+# Author: Christian Heimes
+# based on Collin Winter's fix_import
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name, attr_chain
+
+MAPPING = {"sys":  {"maxint" : "maxsize"},
+          }
+LOOKUP = {}
+
+def alternates(members):
+    return "(" + "|".join(map(repr, members)) + ")"
+
+
+def build_pattern():
+    #bare = set()
+    for module, replace in list(MAPPING.items()):
+        for old_attr, new_attr in list(replace.items()):
+            LOOKUP[(module, old_attr)] = new_attr
+            #bare.add(module)
+            #bare.add(old_attr)
+            #yield """
+            #      import_name< 'import' (module=%r
+            #          | dotted_as_names< any* module=%r any* >) >
+            #      """ % (module, module)
+            yield """
+                  import_from< 'from' module_name=%r 'import'
+                      ( attr_name=%r | import_as_name< attr_name=%r 'as' any >) >
+                  """ % (module, old_attr, old_attr)
+            yield """
+                  power< module_name=%r trailer< '.' attr_name=%r > any* >
+                  """ % (module, old_attr)
+    #yield """bare_name=%s""" % alternates(bare)
+
+
+class FixRenames(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = "|".join(build_pattern())
+
+    order = "pre" # Pre-order tree traversal
+
+    # Don't match the node if it's within another match
+    def match(self, node):
+        match = super(FixRenames, self).match
+        results = match(node)
+        if results:
+            if any(match(obj) for obj in attr_chain(node, "parent")):
+                return False
+            return results
+        return False
+
+    #def start_tree(self, tree, filename):
+    #    super(FixRenames, self).start_tree(tree, filename)
+    #    self.replace = {}
+
+    def transform(self, node, results):
+        mod_name = results.get("module_name")
+        attr_name = results.get("attr_name")
+        #bare_name = results.get("bare_name")
+        #import_mod = results.get("module")
+
+        if mod_name and attr_name:
+            new_attr = LOOKUP[(mod_name.value, attr_name.value)]
+            attr_name.replace(Name(new_attr, prefix=attr_name.prefix))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_repr.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_repr.py
new file mode 100644
index 0000000..1150bb8
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_repr.py
@@ -0,0 +1,23 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer that transforms `xyzzy` into repr(xyzzy)."""
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Call, Name, parenthesize
+
+
+class FixRepr(fixer_base.BaseFix):
+
+    BM_compatible = True
+    PATTERN = """
+              atom < '`' expr=any '`' >
+              """
+
+    def transform(self, node, results):
+        expr = results["expr"].clone()
+
+        if expr.type == self.syms.testlist1:
+            expr = parenthesize(expr)
+        return Call(Name("repr"), [expr], prefix=node.prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_set_literal.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_set_literal.py
new file mode 100644
index 0000000..762550c
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_set_literal.py
@@ -0,0 +1,53 @@
+"""
+Optional fixer to transform set() calls to set literals.
+"""
+
+# Author: Benjamin Peterson
+
+from lib2to3 import fixer_base, pytree
+from lib2to3.fixer_util import token, syms
+
+
+
+class FixSetLiteral(fixer_base.BaseFix):
+
+    BM_compatible = True
+    explicit = True
+
+    PATTERN = """power< 'set' trailer< '('
+                     (atom=atom< '[' (items=listmaker< any ((',' any)* [',']) >
+                                |
+                                single=any) ']' >
+                     |
+                     atom< '(' items=testlist_gexp< any ((',' any)* [',']) > ')' >
+                     )
+                     ')' > >
+              """
+
+    def transform(self, node, results):
+        single = results.get("single")
+        if single:
+            # Make a fake listmaker
+            fake = pytree.Node(syms.listmaker, [single.clone()])
+            single.replace(fake)
+            items = fake
+        else:
+            items = results["items"]
+
+        # Build the contents of the literal
+        literal = [pytree.Leaf(token.LBRACE, "{")]
+        literal.extend(n.clone() for n in items.children)
+        literal.append(pytree.Leaf(token.RBRACE, "}"))
+        # Set the prefix of the right brace to that of the ')' or ']'
+        literal[-1].prefix = items.next_sibling.prefix
+        maker = pytree.Node(syms.dictsetmaker, literal)
+        maker.prefix = node.prefix
+
+        # If the original was a one tuple, we need to remove the extra comma.
+        if len(maker.children) == 4:
+            n = maker.children[2]
+            n.remove()
+            maker.children[-1].prefix = n.prefix
+
+        # Finally, replace the set call with our shiny new literal.
+        return maker
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_standarderror.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_standarderror.py
new file mode 100644
index 0000000..dc74216
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_standarderror.py
@@ -0,0 +1,18 @@
+# Copyright 2007 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for StandardError -> Exception."""
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+
+class FixStandarderror(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+              'StandardError'
+              """
+
+    def transform(self, node, results):
+        return Name("Exception", prefix=node.prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_sys_exc.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_sys_exc.py
new file mode 100644
index 0000000..f603969
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_sys_exc.py
@@ -0,0 +1,30 @@
+"""Fixer for sys.exc_{type, value, traceback}
+
+sys.exc_type -> sys.exc_info()[0]
+sys.exc_value -> sys.exc_info()[1]
+sys.exc_traceback -> sys.exc_info()[2]
+"""
+
+# By Jeff Balogh and Benjamin Peterson
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Attr, Call, Name, Number, Subscript, Node, syms
+
+class FixSysExc(fixer_base.BaseFix):
+    # This order matches the ordering of sys.exc_info().
+    exc_info = ["exc_type", "exc_value", "exc_traceback"]
+    BM_compatible = True
+    PATTERN = """
+              power< 'sys' trailer< dot='.' attribute=(%s) > >
+              """ % '|'.join("'%s'" % e for e in exc_info)
+
+    def transform(self, node, results):
+        sys_attr = results["attribute"][0]
+        index = Number(self.exc_info.index(sys_attr.value))
+
+        call = Call(Name("exc_info"), prefix=sys_attr.prefix)
+        attr = Attr(Name("sys"), call)
+        attr[1].children[0].prefix = results["dot"].prefix
+        attr.append(Subscript(index))
+        return Node(syms.power, attr, prefix=node.prefix)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_throw.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_throw.py
new file mode 100644
index 0000000..aac2916
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_throw.py
@@ -0,0 +1,56 @@
+"""Fixer for generator.throw(E, V, T).
+
+g.throw(E)       -> g.throw(E)
+g.throw(E, V)    -> g.throw(E(V))
+g.throw(E, V, T) -> g.throw(E(V).with_traceback(T))
+
+g.throw("foo"[, V[, T]]) will warn about string exceptions."""
+# Author: Collin Winter
+
+# Local imports
+from .. import pytree
+from ..pgen2 import token
+from .. import fixer_base
+from ..fixer_util import Name, Call, ArgList, Attr, is_tuple
+
+class FixThrow(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+    power< any trailer< '.' 'throw' >
+           trailer< '(' args=arglist< exc=any ',' val=any [',' tb=any] > ')' >
+    >
+    |
+    power< any trailer< '.' 'throw' > trailer< '(' exc=any ')' > >
+    """
+
+    def transform(self, node, results):
+        syms = self.syms
+
+        exc = results["exc"].clone()
+        if exc.type is token.STRING:
+            self.cannot_convert(node, "Python 3 does not support string exceptions")
+            return
+
+        # Leave "g.throw(E)" alone
+        val = results.get("val")
+        if val is None:
+            return
+
+        val = val.clone()
+        if is_tuple(val):
+            args = [c.clone() for c in val.children[1:-1]]
+        else:
+            val.prefix = ""
+            args = [val]
+
+        throw_args = results["args"]
+
+        if "tb" in results:
+            tb = results["tb"].clone()
+            tb.prefix = ""
+
+            e = Call(exc, args)
+            with_tb = Attr(e, Name('with_traceback')) + [ArgList([tb])]
+            throw_args.replace(pytree.Node(syms.power, with_tb))
+        else:
+            throw_args.replace(Call(exc, args))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_tuple_params.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_tuple_params.py
new file mode 100644
index 0000000..cad755f
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_tuple_params.py
@@ -0,0 +1,175 @@
+"""Fixer for function definitions with tuple parameters.
+
+def func(((a, b), c), d):
+    ...
+
+    ->
+
+def func(x, d):
+    ((a, b), c) = x
+    ...
+
+It will also support lambdas:
+
+    lambda (x, y): x + y -> lambda t: t[0] + t[1]
+
+    # The parens are a syntax error in Python 3
+    lambda (x): x + y -> lambda x: x + y
+"""
+# Author: Collin Winter
+
+# Local imports
+from .. import pytree
+from ..pgen2 import token
+from .. import fixer_base
+from ..fixer_util import Assign, Name, Newline, Number, Subscript, syms
+
+def is_docstring(stmt):
+    return isinstance(stmt, pytree.Node) and \
+           stmt.children[0].type == token.STRING
+
+class FixTupleParams(fixer_base.BaseFix):
+    run_order = 4 #use a lower order since lambda is part of other
+                  #patterns
+    BM_compatible = True
+
+    PATTERN = """
+              funcdef< 'def' any parameters< '(' args=any ')' >
+                       ['->' any] ':' suite=any+ >
+              |
+              lambda=
+              lambdef< 'lambda' args=vfpdef< '(' inner=any ')' >
+                       ':' body=any
+              >
+              """
+
+    def transform(self, node, results):
+        if "lambda" in results:
+            return self.transform_lambda(node, results)
+
+        new_lines = []
+        suite = results["suite"]
+        args = results["args"]
+        # This crap is so "def foo(...): x = 5; y = 7" is handled correctly.
+        # TODO(cwinter): suite-cleanup
+        if suite[0].children[1].type == token.INDENT:
+            start = 2
+            indent = suite[0].children[1].value
+            end = Newline()
+        else:
+            start = 0
+            indent = "; "
+            end = pytree.Leaf(token.INDENT, "")
+
+        # We need access to self for new_name(), and making this a method
+        #  doesn't feel right. Closing over self and new_lines makes the
+        #  code below cleaner.
+        def handle_tuple(tuple_arg, add_prefix=False):
+            n = Name(self.new_name())
+            arg = tuple_arg.clone()
+            arg.prefix = ""
+            stmt = Assign(arg, n.clone())
+            if add_prefix:
+                n.prefix = " "
+            tuple_arg.replace(n)
+            new_lines.append(pytree.Node(syms.simple_stmt,
+                                         [stmt, end.clone()]))
+
+        if args.type == syms.tfpdef:
+            handle_tuple(args)
+        elif args.type == syms.typedargslist:
+            for i, arg in enumerate(args.children):
+                if arg.type == syms.tfpdef:
+                    # Without add_prefix, the emitted code is correct,
+                    #  just ugly.
+                    handle_tuple(arg, add_prefix=(i > 0))
+
+        if not new_lines:
+            return
+
+        # This isn't strictly necessary, but it plays nicely with other fixers.
+        # TODO(cwinter) get rid of this when children becomes a smart list
+        for line in new_lines:
+            line.parent = suite[0]
+
+        # TODO(cwinter) suite-cleanup
+        after = start
+        if start == 0:
+            new_lines[0].prefix = " "
+        elif is_docstring(suite[0].children[start]):
+            new_lines[0].prefix = indent
+            after = start + 1
+
+        for line in new_lines:
+            line.parent = suite[0]
+        suite[0].children[after:after] = new_lines
+        for i in range(after+1, after+len(new_lines)+1):
+            suite[0].children[i].prefix = indent
+        suite[0].changed()
+
+    def transform_lambda(self, node, results):
+        args = results["args"]
+        body = results["body"]
+        inner = simplify_args(results["inner"])
+
+        # Replace lambda ((((x)))): x  with lambda x: x
+        if inner.type == token.NAME:
+            inner = inner.clone()
+            inner.prefix = " "
+            args.replace(inner)
+            return
+
+        params = find_params(args)
+        to_index = map_to_index(params)
+        tup_name = self.new_name(tuple_name(params))
+
+        new_param = Name(tup_name, prefix=" ")
+        args.replace(new_param.clone())
+        for n in body.post_order():
+            if n.type == token.NAME and n.value in to_index:
+                subscripts = [c.clone() for c in to_index[n.value]]
+                new = pytree.Node(syms.power,
+                                  [new_param.clone()] + subscripts)
+                new.prefix = n.prefix
+                n.replace(new)
+
+
+### Helper functions for transform_lambda()
+
+def simplify_args(node):
+    if node.type in (syms.vfplist, token.NAME):
+        return node
+    elif node.type == syms.vfpdef:
+        # These look like vfpdef< '(' x ')' > where x is NAME
+        # or another vfpdef instance (leading to recursion).
+        while node.type == syms.vfpdef:
+            node = node.children[1]
+        return node
+    raise RuntimeError("Received unexpected node %s" % node)
+
+def find_params(node):
+    if node.type == syms.vfpdef:
+        return find_params(node.children[1])
+    elif node.type == token.NAME:
+        return node.value
+    return [find_params(c) for c in node.children if c.type != token.COMMA]
+
+def map_to_index(param_list, prefix=[], d=None):
+    if d is None:
+        d = {}
+    for i, obj in enumerate(param_list):
+        trailer = [Subscript(Number(str(i)))]
+        if isinstance(obj, list):
+            map_to_index(obj, trailer, d=d)
+        else:
+            d[obj] = prefix + trailer
+    return d
+
+def tuple_name(param_list):
+    l = []
+    for obj in param_list:
+        if isinstance(obj, list):
+            l.append(tuple_name(obj))
+        else:
+            l.append(obj)
+    return "_".join(l)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_types.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_types.py
new file mode 100644
index 0000000..67bf51f
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_types.py
@@ -0,0 +1,61 @@
+# Copyright 2007 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer for removing uses of the types module.
+
+These work for only the known names in the types module.  The forms above
+can include types. or not.  ie, It is assumed the module is imported either as:
+
+    import types
+    from types import ... # either * or specific types
+
+The import statements are not modified.
+
+There should be another fixer that handles at least the following constants:
+
+   type([]) -> list
+   type(()) -> tuple
+   type('') -> str
+
+"""
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+_TYPE_MAPPING = {
+        'BooleanType' : 'bool',
+        'BufferType' : 'memoryview',
+        'ClassType' : 'type',
+        'ComplexType' : 'complex',
+        'DictType': 'dict',
+        'DictionaryType' : 'dict',
+        'EllipsisType' : 'type(Ellipsis)',
+        #'FileType' : 'io.IOBase',
+        'FloatType': 'float',
+        'IntType': 'int',
+        'ListType': 'list',
+        'LongType': 'int',
+        'ObjectType' : 'object',
+        'NoneType': 'type(None)',
+        'NotImplementedType' : 'type(NotImplemented)',
+        'SliceType' : 'slice',
+        'StringType': 'bytes', # XXX ?
+        'StringTypes' : '(str,)', # XXX ?
+        'TupleType': 'tuple',
+        'TypeType' : 'type',
+        'UnicodeType': 'str',
+        'XRangeType' : 'range',
+    }
+
+_pats = ["power< 'types' trailer< '.' name='%s' > >" % t for t in _TYPE_MAPPING]
+
+class FixTypes(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = '|'.join(_pats)
+
+    def transform(self, node, results):
+        new_value = _TYPE_MAPPING.get(results["name"].value)
+        if new_value:
+            return Name(new_value, prefix=node.prefix)
+        return None
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_unicode.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_unicode.py
new file mode 100644
index 0000000..c7982c2
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_unicode.py
@@ -0,0 +1,42 @@
+r"""Fixer for unicode.
+
+* Changes unicode to str and unichr to chr.
+
+* If "...\u..." is not unicode literal change it into "...\\u...".
+
+* Change u"..." into "...".
+
+"""
+
+from ..pgen2 import token
+from .. import fixer_base
+
+_mapping = {"unichr" : "chr", "unicode" : "str"}
+
+class FixUnicode(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = "STRING | 'unicode' | 'unichr'"
+
+    def start_tree(self, tree, filename):
+        super(FixUnicode, self).start_tree(tree, filename)
+        self.unicode_literals = 'unicode_literals' in tree.future_features
+
+    def transform(self, node, results):
+        if node.type == token.NAME:
+            new = node.clone()
+            new.value = _mapping[node.value]
+            return new
+        elif node.type == token.STRING:
+            val = node.value
+            if not self.unicode_literals and val[0] in '\'"' and '\\' in val:
+                val = r'\\'.join([
+                    v.replace('\\u', r'\\u').replace('\\U', r'\\U')
+                    for v in val.split(r'\\')
+                ])
+            if val[0] in 'uU':
+                val = val[1:]
+            if val == node.value:
+                return node
+            new = node.clone()
+            new.value = val
+            return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_urllib.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_urllib.py
new file mode 100644
index 0000000..5a36049
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_urllib.py
@@ -0,0 +1,196 @@
+"""Fix changes imports of urllib which are now incompatible.
+   This is rather similar to fix_imports, but because of the more
+   complex nature of the fixing for urllib, it has its own fixer.
+"""
+# Author: Nick Edds
+
+# Local imports
+from lib2to3.fixes.fix_imports import alternates, FixImports
+from lib2to3.fixer_util import (Name, Comma, FromImport, Newline,
+                                find_indentation, Node, syms)
+
+MAPPING = {"urllib":  [
+                ("urllib.request",
+                    ["URLopener", "FancyURLopener", "urlretrieve",
+                     "_urlopener", "urlopen", "urlcleanup",
+                     "pathname2url", "url2pathname"]),
+                ("urllib.parse",
+                    ["quote", "quote_plus", "unquote", "unquote_plus",
+                     "urlencode", "splitattr", "splithost", "splitnport",
+                     "splitpasswd", "splitport", "splitquery", "splittag",
+                     "splittype", "splituser", "splitvalue", ]),
+                ("urllib.error",
+                    ["ContentTooShortError"])],
+           "urllib2" : [
+                ("urllib.request",
+                    ["urlopen", "install_opener", "build_opener",
+                     "Request", "OpenerDirector", "BaseHandler",
+                     "HTTPDefaultErrorHandler", "HTTPRedirectHandler",
+                     "HTTPCookieProcessor", "ProxyHandler",
+                     "HTTPPasswordMgr",
+                     "HTTPPasswordMgrWithDefaultRealm",
+                     "AbstractBasicAuthHandler",
+                     "HTTPBasicAuthHandler", "ProxyBasicAuthHandler",
+                     "AbstractDigestAuthHandler",
+                     "HTTPDigestAuthHandler", "ProxyDigestAuthHandler",
+                     "HTTPHandler", "HTTPSHandler", "FileHandler",
+                     "FTPHandler", "CacheFTPHandler",
+                     "UnknownHandler"]),
+                ("urllib.error",
+                    ["URLError", "HTTPError"]),
+           ]
+}
+
+# Duplicate the url parsing functions for urllib2.
+MAPPING["urllib2"].append(MAPPING["urllib"][1])
+
+
+def build_pattern():
+    bare = set()
+    for old_module, changes in MAPPING.items():
+        for change in changes:
+            new_module, members = change
+            members = alternates(members)
+            yield """import_name< 'import' (module=%r
+                                  | dotted_as_names< any* module=%r any* >) >
+                  """ % (old_module, old_module)
+            yield """import_from< 'from' mod_member=%r 'import'
+                       ( member=%s | import_as_name< member=%s 'as' any > |
+                         import_as_names< members=any*  >) >
+                  """ % (old_module, members, members)
+            yield """import_from< 'from' module_star=%r 'import' star='*' >
+                  """ % old_module
+            yield """import_name< 'import'
+                                  dotted_as_name< module_as=%r 'as' any > >
+                  """ % old_module
+            # bare_with_attr has a special significance for FixImports.match().
+            yield """power< bare_with_attr=%r trailer< '.' member=%s > any* >
+                  """ % (old_module, members)
+
+
+class FixUrllib(FixImports):
+
+    def build_pattern(self):
+        return "|".join(build_pattern())
+
+    def transform_import(self, node, results):
+        """Transform for the basic import case. Replaces the old
+           import name with a comma separated list of its
+           replacements.
+        """
+        import_mod = results.get("module")
+        pref = import_mod.prefix
+
+        names = []
+
+        # create a Node list of the replacement modules
+        for name in MAPPING[import_mod.value][:-1]:
+            names.extend([Name(name[0], prefix=pref), Comma()])
+        names.append(Name(MAPPING[import_mod.value][-1][0], prefix=pref))
+        import_mod.replace(names)
+
+    def transform_member(self, node, results):
+        """Transform for imports of specific module elements. Replaces
+           the module to be imported from with the appropriate new
+           module.
+        """
+        mod_member = results.get("mod_member")
+        pref = mod_member.prefix
+        member = results.get("member")
+
+        # Simple case with only a single member being imported
+        if member:
+            # this may be a list of length one, or just a node
+            if isinstance(member, list):
+                member = member[0]
+            new_name = None
+            for change in MAPPING[mod_member.value]:
+                if member.value in change[1]:
+                    new_name = change[0]
+                    break
+            if new_name:
+                mod_member.replace(Name(new_name, prefix=pref))
+            else:
+                self.cannot_convert(node, "This is an invalid module element")
+
+        # Multiple members being imported
+        else:
+            # a dictionary for replacements, order matters
+            modules = []
+            mod_dict = {}
+            members = results["members"]
+            for member in members:
+                # we only care about the actual members
+                if member.type == syms.import_as_name:
+                    as_name = member.children[2].value
+                    member_name = member.children[0].value
+                else:
+                    member_name = member.value
+                    as_name = None
+                if member_name != ",":
+                    for change in MAPPING[mod_member.value]:
+                        if member_name in change[1]:
+                            if change[0] not in mod_dict:
+                                modules.append(change[0])
+                            mod_dict.setdefault(change[0], []).append(member)
+
+            new_nodes = []
+            indentation = find_indentation(node)
+            first = True
+            def handle_name(name, prefix):
+                if name.type == syms.import_as_name:
+                    kids = [Name(name.children[0].value, prefix=prefix),
+                            name.children[1].clone(),
+                            name.children[2].clone()]
+                    return [Node(syms.import_as_name, kids)]
+                return [Name(name.value, prefix=prefix)]
+            for module in modules:
+                elts = mod_dict[module]
+                names = []
+                for elt in elts[:-1]:
+                    names.extend(handle_name(elt, pref))
+                    names.append(Comma())
+                names.extend(handle_name(elts[-1], pref))
+                new = FromImport(module, names)
+                if not first or node.parent.prefix.endswith(indentation):
+                    new.prefix = indentation
+                new_nodes.append(new)
+                first = False
+            if new_nodes:
+                nodes = []
+                for new_node in new_nodes[:-1]:
+                    nodes.extend([new_node, Newline()])
+                nodes.append(new_nodes[-1])
+                node.replace(nodes)
+            else:
+                self.cannot_convert(node, "All module elements are invalid")
+
+    def transform_dot(self, node, results):
+        """Transform for calls to module members in code."""
+        module_dot = results.get("bare_with_attr")
+        member = results.get("member")
+        new_name = None
+        if isinstance(member, list):
+            member = member[0]
+        for change in MAPPING[module_dot.value]:
+            if member.value in change[1]:
+                new_name = change[0]
+                break
+        if new_name:
+            module_dot.replace(Name(new_name,
+                                    prefix=module_dot.prefix))
+        else:
+            self.cannot_convert(node, "This is an invalid module element")
+
+    def transform(self, node, results):
+        if results.get("module"):
+            self.transform_import(node, results)
+        elif results.get("mod_member"):
+            self.transform_member(node, results)
+        elif results.get("bare_with_attr"):
+            self.transform_dot(node, results)
+        # Renaming and star imports are not supported for these modules.
+        elif results.get("module_star"):
+            self.cannot_convert(node, "Cannot handle star imports.")
+        elif results.get("module_as"):
+            self.cannot_convert(node, "This module is now multiple modules")
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_ws_comma.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_ws_comma.py
new file mode 100644
index 0000000..a54a376
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_ws_comma.py
@@ -0,0 +1,39 @@
+"""Fixer that changes 'a ,b' into 'a, b'.
+
+This also changes '{a :b}' into '{a: b}', but does not touch other
+uses of colons.  It does not touch other uses of whitespace.
+
+"""
+
+from .. import pytree
+from ..pgen2 import token
+from .. import fixer_base
+
+class FixWsComma(fixer_base.BaseFix):
+
+    explicit = True # The user must ask for this fixers
+
+    PATTERN = """
+    any<(not(',') any)+ ',' ((not(',') any)+ ',')* [not(',') any]>
+    """
+
+    COMMA = pytree.Leaf(token.COMMA, ",")
+    COLON = pytree.Leaf(token.COLON, ":")
+    SEPS = (COMMA, COLON)
+
+    def transform(self, node, results):
+        new = node.clone()
+        comma = False
+        for child in new.children:
+            if child in self.SEPS:
+                prefix = child.prefix
+                if prefix.isspace() and "\n" not in prefix:
+                    child.prefix = ""
+                comma = True
+            else:
+                if comma:
+                    prefix = child.prefix
+                    if not prefix:
+                        child.prefix = " "
+                comma = False
+        return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_xrange.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_xrange.py
new file mode 100644
index 0000000..1e491e1
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_xrange.py
@@ -0,0 +1,73 @@
+# Copyright 2007 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Fixer that changes xrange(...) into range(...)."""
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name, Call, consuming_calls
+from .. import patcomp
+
+
+class FixXrange(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+              power<
+                 (name='range'|name='xrange') trailer< '(' args=any ')' >
+              rest=any* >
+              """
+
+    def start_tree(self, tree, filename):
+        super(FixXrange, self).start_tree(tree, filename)
+        self.transformed_xranges = set()
+
+    def finish_tree(self, tree, filename):
+        self.transformed_xranges = None
+
+    def transform(self, node, results):
+        name = results["name"]
+        if name.value == "xrange":
+            return self.transform_xrange(node, results)
+        elif name.value == "range":
+            return self.transform_range(node, results)
+        else:
+            raise ValueError(repr(name))
+
+    def transform_xrange(self, node, results):
+        name = results["name"]
+        name.replace(Name("range", prefix=name.prefix))
+        # This prevents the new range call from being wrapped in a list later.
+        self.transformed_xranges.add(id(node))
+
+    def transform_range(self, node, results):
+        if (id(node) not in self.transformed_xranges and
+            not self.in_special_context(node)):
+            range_call = Call(Name("range"), [results["args"].clone()])
+            # Encase the range call in list().
+            list_call = Call(Name("list"), [range_call],
+                             prefix=node.prefix)
+            # Put things that were after the range() call after the list call.
+            for n in results["rest"]:
+                list_call.append_child(n)
+            return list_call
+
+    P1 = "power< func=NAME trailer< '(' node=any ')' > any* >"
+    p1 = patcomp.compile_pattern(P1)
+
+    P2 = """for_stmt< 'for' any 'in' node=any ':' any* >
+            | comp_for< 'for' any 'in' node=any any* >
+            | comparison< any 'in' node=any any*>
+         """
+    p2 = patcomp.compile_pattern(P2)
+
+    def in_special_context(self, node):
+        if node.parent is None:
+            return False
+        results = {}
+        if (node.parent.parent is not None and
+               self.p1.match(node.parent.parent, results) and
+               results["node"] is node):
+            # list(d.keys()) -> list(d.keys()), etc.
+            return results["func"].value in consuming_calls
+        # for ... in d.iterkeys() -> for ... in d.keys(), etc.
+        return self.p2.match(node.parent, results) and results["node"] is node
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_xreadlines.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_xreadlines.py
new file mode 100644
index 0000000..3e3f71a
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_xreadlines.py
@@ -0,0 +1,25 @@
+"""Fix "for x in f.xreadlines()" -> "for x in f".
+
+This fixer will also convert g(f.xreadlines) into g(f.__iter__)."""
+# Author: Collin Winter
+
+# Local imports
+from .. import fixer_base
+from ..fixer_util import Name
+
+
+class FixXreadlines(fixer_base.BaseFix):
+    BM_compatible = True
+    PATTERN = """
+    power< call=any+ trailer< '.' 'xreadlines' > trailer< '(' ')' > >
+    |
+    power< any+ trailer< '.' no_call='xreadlines' > >
+    """
+
+    def transform(self, node, results):
+        no_call = results.get("no_call")
+
+        if no_call:
+            no_call.replace(Name("__iter__", prefix=no_call.prefix))
+        else:
+            node.replace([x.clone() for x in results["call"]])
diff --git a/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_zip.py b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_zip.py
new file mode 100644
index 0000000..52c28df
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/fixes/fix_zip.py
@@ -0,0 +1,46 @@
+"""
+Fixer that changes zip(seq0, seq1, ...) into list(zip(seq0, seq1, ...)
+unless there exists a 'from future_builtins import zip' statement in the
+top-level namespace.
+
+We avoid the transformation if the zip() call is directly contained in
+iter(<>), list(<>), tuple(<>), sorted(<>), ...join(<>), or for V in <>:.
+"""
+
+# Local imports
+from .. import fixer_base
+from ..pytree import Node
+from ..pygram import python_symbols as syms
+from ..fixer_util import Name, ArgList, in_special_context
+
+
+class FixZip(fixer_base.ConditionalFix):
+
+    BM_compatible = True
+    PATTERN = """
+    power< 'zip' args=trailer< '(' [any] ')' > [trailers=trailer*]
+    >
+    """
+
+    skip_on = "future_builtins.zip"
+
+    def transform(self, node, results):
+        if self.should_skip(node):
+            return
+
+        if in_special_context(node):
+            return None
+
+        args = results['args'].clone()
+        args.prefix = ""
+
+        trailers = []
+        if 'trailers' in results:
+            trailers = [n.clone() for n in results['trailers']]
+            for n in trailers:
+                n.prefix = ""
+
+        new = Node(syms.power, [Name("zip"), args], prefix="")
+        new = Node(syms.power, [Name("list"), ArgList([new])] + trailers)
+        new.prefix = node.prefix
+        return new
diff --git a/rootfs/usr/lib/python3.8/lib2to3/main.py b/rootfs/usr/lib/python3.8/lib2to3/main.py
new file mode 100644
index 0000000..d6b7088
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/main.py
@@ -0,0 +1,268 @@
+"""
+Main program for 2to3.
+"""
+
+from __future__ import with_statement, print_function
+
+import sys
+import os
+import difflib
+import logging
+import shutil
+import optparse
+
+from . import refactor
+
+
+def diff_texts(a, b, filename):
+    """Return a unified diff of two strings."""
+    a = a.splitlines()
+    b = b.splitlines()
+    return difflib.unified_diff(a, b, filename, filename,
+                                "(original)", "(refactored)",
+                                lineterm="")
+
+
+class StdoutRefactoringTool(refactor.MultiprocessRefactoringTool):
+    """
+    A refactoring tool that can avoid overwriting its input files.
+    Prints output to stdout.
+
+    Output files can optionally be written to a different directory and or
+    have an extra file suffix appended to their name for use in situations
+    where you do not want to replace the input files.
+    """
+
+    def __init__(self, fixers, options, explicit, nobackups, show_diffs,
+                 input_base_dir='', output_dir='', append_suffix=''):
+        """
+        Args:
+            fixers: A list of fixers to import.
+            options: A dict with RefactoringTool configuration.
+            explicit: A list of fixers to run even if they are explicit.
+            nobackups: If true no backup '.bak' files will be created for those
+                files that are being refactored.
+            show_diffs: Should diffs of the refactoring be printed to stdout?
+            input_base_dir: The base directory for all input files.  This class
+                will strip this path prefix off of filenames before substituting
+                it with output_dir.  Only meaningful if output_dir is supplied.
+                All files processed by refactor() must start with this path.
+            output_dir: If supplied, all converted files will be written into
+                this directory tree instead of input_base_dir.
+            append_suffix: If supplied, all files output by this tool will have
+                this appended to their filename.  Useful for changing .py to
+                .py3 for example by passing append_suffix='3'.
+        """
+        self.nobackups = nobackups
+        self.show_diffs = show_diffs
+        if input_base_dir and not input_base_dir.endswith(os.sep):
+            input_base_dir += os.sep
+        self._input_base_dir = input_base_dir
+        self._output_dir = output_dir
+        self._append_suffix = append_suffix
+        super(StdoutRefactoringTool, self).__init__(fixers, options, explicit)
+
+    def log_error(self, msg, *args, **kwargs):
+        self.errors.append((msg, args, kwargs))
+        self.logger.error(msg, *args, **kwargs)
+
+    def write_file(self, new_text, filename, old_text, encoding):
+        orig_filename = filename
+        if self._output_dir:
+            if filename.startswith(self._input_base_dir):
+                filename = os.path.join(self._output_dir,
+                                        filename[len(self._input_base_dir):])
+            else:
+                raise ValueError('filename %s does not start with the '
+                                 'input_base_dir %s' % (
+                                         filename, self._input_base_dir))
+        if self._append_suffix:
+            filename += self._append_suffix
+        if orig_filename != filename:
+            output_dir = os.path.dirname(filename)
+            if not os.path.isdir(output_dir) and output_dir:
+                os.makedirs(output_dir)
+            self.log_message('Writing converted %s to %s.', orig_filename,
+                             filename)
+        if not self.nobackups:
+            # Make backup
+            backup = filename + ".bak"
+            if os.path.lexists(backup):
+                try:
+                    os.remove(backup)
+                except OSError as err:
+                    self.log_message("Can't remove backup %s", backup)
+            try:
+                os.rename(filename, backup)
+            except OSError as err:
+                self.log_message("Can't rename %s to %s", filename, backup)
+        # Actually write the new file
+        write = super(StdoutRefactoringTool, self).write_file
+        write(new_text, filename, old_text, encoding)
+        if not self.nobackups:
+            shutil.copymode(backup, filename)
+        if orig_filename != filename:
+            # Preserve the file mode in the new output directory.
+            shutil.copymode(orig_filename, filename)
+
+    def print_output(self, old, new, filename, equal):
+        if equal:
+            self.log_message("No changes to %s", filename)
+        else:
+            self.log_message("Refactored %s", filename)
+            if self.show_diffs:
+                diff_lines = diff_texts(old, new, filename)
+                try:
+                    if self.output_lock is not None:
+                        with self.output_lock:
+                            for line in diff_lines:
+                                print(line)
+                            sys.stdout.flush()
+                    else:
+                        for line in diff_lines:
+                            print(line)
+                except UnicodeEncodeError:
+                    warn("couldn't encode %s's diff for your terminal" %
+                         (filename,))
+                    return
+
+def warn(msg):
+    print("WARNING: %s" % (msg,), file=sys.stderr)
+
+
+def main(fixer_pkg, args=None):
+    """Main program.
+
+    Args:
+        fixer_pkg: the name of a package where the fixers are located.
+        args: optional; a list of command line arguments. If omitted,
+              sys.argv[1:] is used.
+
+    Returns a suggested exit status (0, 1, 2).
+    """
+    # Set up option parser
+    parser = optparse.OptionParser(usage="2to3 [options] file|dir ...")
+    parser.add_option("-d", "--doctests_only", action="store_true",
+                      help="Fix up doctests only")
+    parser.add_option("-f", "--fix", action="append", default=[],
+                      help="Each FIX specifies a transformation; default: all")
+    parser.add_option("-j", "--processes", action="store", default=1,
+                      type="int", help="Run 2to3 concurrently")
+    parser.add_option("-x", "--nofix", action="append", default=[],
+                      help="Prevent a transformation from being run")
+    parser.add_option("-l", "--list-fixes", action="store_true",
+                      help="List available transformations")
+    parser.add_option("-p", "--print-function", action="store_true",
+                      help="Modify the grammar so that print() is a function")
+    parser.add_option("-v", "--verbose", action="store_true",
+                      help="More verbose logging")
+    parser.add_option("--no-diffs", action="store_true",
+                      help="Don't show diffs of the refactoring")
+    parser.add_option("-w", "--write", action="store_true",
+                      help="Write back modified files")
+    parser.add_option("-n", "--nobackups", action="store_true", default=False,
+                      help="Don't write backups for modified files")
+    parser.add_option("-o", "--output-dir", action="store", type="str",
+                      default="", help="Put output files in this directory "
+                      "instead of overwriting the input files.  Requires -n.")
+    parser.add_option("-W", "--write-unchanged-files", action="store_true",
+                      help="Also write files even if no changes were required"
+                      " (useful with --output-dir); implies -w.")
+    parser.add_option("--add-suffix", action="store", type="str", default="",
+                      help="Append this string to all output filenames."
+                      " Requires -n if non-empty.  "
+                      "ex: --add-suffix='3' will generate .py3 files.")
+
+    # Parse command line arguments
+    refactor_stdin = False
+    flags = {}
+    options, args = parser.parse_args(args)
+    if options.write_unchanged_files:
+        flags["write_unchanged_files"] = True
+        if not options.write:
+            warn("--write-unchanged-files/-W implies -w.")
+        options.write = True
+    # If we allowed these, the original files would be renamed to backup names
+    # but not replaced.
+    if options.output_dir and not options.nobackups:
+        parser.error("Can't use --output-dir/-o without -n.")
+    if options.add_suffix and not options.nobackups:
+        parser.error("Can't use --add-suffix without -n.")
+
+    if not options.write and options.no_diffs:
+        warn("not writing files and not printing diffs; that's not very useful")
+    if not options.write and options.nobackups:
+        parser.error("Can't use -n without -w")
+    if options.list_fixes:
+        print("Available transformations for the -f/--fix option:")
+        for fixname in refactor.get_all_fix_names(fixer_pkg):
+            print(fixname)
+        if not args:
+            return 0
+    if not args:
+        print("At least one file or directory argument required.", file=sys.stderr)
+        print("Use --help to show usage.", file=sys.stderr)
+        return 2
+    if "-" in args:
+        refactor_stdin = True
+        if options.write:
+            print("Can't write to stdin.", file=sys.stderr)
+            return 2
+    if options.print_function:
+        flags["print_function"] = True
+
+    # Set up logging handler
+    level = logging.DEBUG if options.verbose else logging.INFO
+    logging.basicConfig(format='%(name)s: %(message)s', level=level)
+    logger = logging.getLogger('lib2to3.main')
+
+    # Initialize the refactoring tool
+    avail_fixes = set(refactor.get_fixers_from_package(fixer_pkg))
+    unwanted_fixes = set(fixer_pkg + ".fix_" + fix for fix in options.nofix)
+    explicit = set()
+    if options.fix:
+        all_present = False
+        for fix in options.fix:
+            if fix == "all":
+                all_present = True
+            else:
+                explicit.add(fixer_pkg + ".fix_" + fix)
+        requested = avail_fixes.union(explicit) if all_present else explicit
+    else:
+        requested = avail_fixes.union(explicit)
+    fixer_names = requested.difference(unwanted_fixes)
+    input_base_dir = os.path.commonprefix(args)
+    if (input_base_dir and not input_base_dir.endswith(os.sep)
+        and not os.path.isdir(input_base_dir)):
+        # One or more similar names were passed, their directory is the base.
+        # os.path.commonprefix() is ignorant of path elements, this corrects
+        # for that weird API.
+        input_base_dir = os.path.dirname(input_base_dir)
+    if options.output_dir:
+        input_base_dir = input_base_dir.rstrip(os.sep)
+        logger.info('Output in %r will mirror the input directory %r layout.',
+                    options.output_dir, input_base_dir)
+    rt = StdoutRefactoringTool(
+            sorted(fixer_names), flags, sorted(explicit),
+            options.nobackups, not options.no_diffs,
+            input_base_dir=input_base_dir,
+            output_dir=options.output_dir,
+            append_suffix=options.add_suffix)
+
+    # Refactor all files and directories passed as arguments
+    if not rt.errors:
+        if refactor_stdin:
+            rt.refactor_stdin()
+        else:
+            try:
+                rt.refactor(args, options.write, options.doctests_only,
+                            options.processes)
+            except refactor.MultiprocessingUnsupported:
+                assert options.processes > 1
+                print("Sorry, -j isn't supported on this platform.",
+                      file=sys.stderr)
+                return 1
+        rt.summarize()
+
+    # Return error status (0 if rt.errors is zero)
+    return int(bool(rt.errors))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/patcomp.py b/rootfs/usr/lib/python3.8/lib2to3/patcomp.py
new file mode 100644
index 0000000..f57f495
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/patcomp.py
@@ -0,0 +1,204 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Pattern compiler.
+
+The grammar is taken from PatternGrammar.txt.
+
+The compiler compiles a pattern to a pytree.*Pattern instance.
+"""
+
+__author__ = "Guido van Rossum <guido@python.org>"
+
+# Python imports
+import io
+
+# Fairly local imports
+from .pgen2 import driver, literals, token, tokenize, parse, grammar
+
+# Really local imports
+from . import pytree
+from . import pygram
+
+
+class PatternSyntaxError(Exception):
+    pass
+
+
+def tokenize_wrapper(input):
+    """Tokenizes a string suppressing significant whitespace."""
+    skip = {token.NEWLINE, token.INDENT, token.DEDENT}
+    tokens = tokenize.generate_tokens(io.StringIO(input).readline)
+    for quintuple in tokens:
+        type, value, start, end, line_text = quintuple
+        if type not in skip:
+            yield quintuple
+
+
+class PatternCompiler(object):
+
+    def __init__(self, grammar_file=None):
+        """Initializer.
+
+        Takes an optional alternative filename for the pattern grammar.
+        """
+        if grammar_file is None:
+            self.grammar = pygram.pattern_grammar
+            self.syms = pygram.pattern_symbols
+        else:
+            self.grammar = driver.load_grammar(grammar_file)
+            self.syms = pygram.Symbols(self.grammar)
+        self.pygrammar = pygram.python_grammar
+        self.pysyms = pygram.python_symbols
+        self.driver = driver.Driver(self.grammar, convert=pattern_convert)
+
+    def compile_pattern(self, input, debug=False, with_tree=False):
+        """Compiles a pattern string to a nested pytree.*Pattern object."""
+        tokens = tokenize_wrapper(input)
+        try:
+            root = self.driver.parse_tokens(tokens, debug=debug)
+        except parse.ParseError as e:
+            raise PatternSyntaxError(str(e)) from None
+        if with_tree:
+            return self.compile_node(root), root
+        else:
+            return self.compile_node(root)
+
+    def compile_node(self, node):
+        """Compiles a node, recursively.
+
+        This is one big switch on the node type.
+        """
+        # XXX Optimize certain Wildcard-containing-Wildcard patterns
+        # that can be merged
+        if node.type == self.syms.Matcher:
+            node = node.children[0] # Avoid unneeded recursion
+
+        if node.type == self.syms.Alternatives:
+            # Skip the odd children since they are just '|' tokens
+            alts = [self.compile_node(ch) for ch in node.children[::2]]
+            if len(alts) == 1:
+                return alts[0]
+            p = pytree.WildcardPattern([[a] for a in alts], min=1, max=1)
+            return p.optimize()
+
+        if node.type == self.syms.Alternative:
+            units = [self.compile_node(ch) for ch in node.children]
+            if len(units) == 1:
+                return units[0]
+            p = pytree.WildcardPattern([units], min=1, max=1)
+            return p.optimize()
+
+        if node.type == self.syms.NegatedUnit:
+            pattern = self.compile_basic(node.children[1:])
+            p = pytree.NegatedPattern(pattern)
+            return p.optimize()
+
+        assert node.type == self.syms.Unit
+
+        name = None
+        nodes = node.children
+        if len(nodes) >= 3 and nodes[1].type == token.EQUAL:
+            name = nodes[0].value
+            nodes = nodes[2:]
+        repeat = None
+        if len(nodes) >= 2 and nodes[-1].type == self.syms.Repeater:
+            repeat = nodes[-1]
+            nodes = nodes[:-1]
+
+        # Now we've reduced it to: STRING | NAME [Details] | (...) | [...]
+        pattern = self.compile_basic(nodes, repeat)
+
+        if repeat is not None:
+            assert repeat.type == self.syms.Repeater
+            children = repeat.children
+            child = children[0]
+            if child.type == token.STAR:
+                min = 0
+                max = pytree.HUGE
+            elif child.type == token.PLUS:
+                min = 1
+                max = pytree.HUGE
+            elif child.type == token.LBRACE:
+                assert children[-1].type == token.RBRACE
+                assert  len(children) in (3, 5)
+                min = max = self.get_int(children[1])
+                if len(children) == 5:
+                    max = self.get_int(children[3])
+            else:
+                assert False
+            if min != 1 or max != 1:
+                pattern = pattern.optimize()
+                pattern = pytree.WildcardPattern([[pattern]], min=min, max=max)
+
+        if name is not None:
+            pattern.name = name
+        return pattern.optimize()
+
+    def compile_basic(self, nodes, repeat=None):
+        # Compile STRING | NAME [Details] | (...) | [...]
+        assert len(nodes) >= 1
+        node = nodes[0]
+        if node.type == token.STRING:
+            value = str(literals.evalString(node.value))
+            return pytree.LeafPattern(_type_of_literal(value), value)
+        elif node.type == token.NAME:
+            value = node.value
+            if value.isupper():
+                if value not in TOKEN_MAP:
+                    raise PatternSyntaxError("Invalid token: %r" % value)
+                if nodes[1:]:
+                    raise PatternSyntaxError("Can't have details for token")
+                return pytree.LeafPattern(TOKEN_MAP[value])
+            else:
+                if value == "any":
+                    type = None
+                elif not value.startswith("_"):
+                    type = getattr(self.pysyms, value, None)
+                    if type is None:
+                        raise PatternSyntaxError("Invalid symbol: %r" % value)
+                if nodes[1:]: # Details present
+                    content = [self.compile_node(nodes[1].children[1])]
+                else:
+                    content = None
+                return pytree.NodePattern(type, content)
+        elif node.value == "(":
+            return self.compile_node(nodes[1])
+        elif node.value == "[":
+            assert repeat is None
+            subpattern = self.compile_node(nodes[1])
+            return pytree.WildcardPattern([[subpattern]], min=0, max=1)
+        assert False, node
+
+    def get_int(self, node):
+        assert node.type == token.NUMBER
+        return int(node.value)
+
+
+# Map named tokens to the type value for a LeafPattern
+TOKEN_MAP = {"NAME": token.NAME,
+             "STRING": token.STRING,
+             "NUMBER": token.NUMBER,
+             "TOKEN": None}
+
+
+def _type_of_literal(value):
+    if value[0].isalpha():
+        return token.NAME
+    elif value in grammar.opmap:
+        return grammar.opmap[value]
+    else:
+        return None
+
+
+def pattern_convert(grammar, raw_node_info):
+    """Converts raw node information to a Node or Leaf instance."""
+    type, value, context, children = raw_node_info
+    if children or type in grammar.number2symbol:
+        return pytree.Node(type, children, context=context)
+    else:
+        return pytree.Leaf(type, value, context=context)
+
+
+def compile_pattern(pattern):
+    return PatternCompiler().compile_pattern(pattern)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pgen2/__init__.py b/rootfs/usr/lib/python3.8/lib2to3/pgen2/__init__.py
new file mode 100644
index 0000000..af39048
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pgen2/__init__.py
@@ -0,0 +1,4 @@
+# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""The pgen2 package."""
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diff --git a/rootfs/usr/lib/python3.8/lib2to3/pgen2/conv.py b/rootfs/usr/lib/python3.8/lib2to3/pgen2/conv.py
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index 0000000..ed0cac5
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+++ b/rootfs/usr/lib/python3.8/lib2to3/pgen2/conv.py
@@ -0,0 +1,257 @@
+# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Convert graminit.[ch] spit out by pgen to Python code.
+
+Pgen is the Python parser generator.  It is useful to quickly create a
+parser from a grammar file in Python's grammar notation.  But I don't
+want my parsers to be written in C (yet), so I'm translating the
+parsing tables to Python data structures and writing a Python parse
+engine.
+
+Note that the token numbers are constants determined by the standard
+Python tokenizer.  The standard token module defines these numbers and
+their names (the names are not used much).  The token numbers are
+hardcoded into the Python tokenizer and into pgen.  A Python
+implementation of the Python tokenizer is also available, in the
+standard tokenize module.
+
+On the other hand, symbol numbers (representing the grammar's
+non-terminals) are assigned by pgen based on the actual grammar
+input.
+
+Note: this module is pretty much obsolete; the pgen module generates
+equivalent grammar tables directly from the Grammar.txt input file
+without having to invoke the Python pgen C program.
+
+"""
+
+# Python imports
+import re
+
+# Local imports
+from pgen2 import grammar, token
+
+
+class Converter(grammar.Grammar):
+    """Grammar subclass that reads classic pgen output files.
+
+    The run() method reads the tables as produced by the pgen parser
+    generator, typically contained in two C files, graminit.h and
+    graminit.c.  The other methods are for internal use only.
+
+    See the base class for more documentation.
+
+    """
+
+    def run(self, graminit_h, graminit_c):
+        """Load the grammar tables from the text files written by pgen."""
+        self.parse_graminit_h(graminit_h)
+        self.parse_graminit_c(graminit_c)
+        self.finish_off()
+
+    def parse_graminit_h(self, filename):
+        """Parse the .h file written by pgen.  (Internal)
+
+        This file is a sequence of #define statements defining the
+        nonterminals of the grammar as numbers.  We build two tables
+        mapping the numbers to names and back.
+
+        """
+        try:
+            f = open(filename)
+        except OSError as err:
+            print("Can't open %s: %s" % (filename, err))
+            return False
+        self.symbol2number = {}
+        self.number2symbol = {}
+        lineno = 0
+        for line in f:
+            lineno += 1
+            mo = re.match(r"^#define\s+(\w+)\s+(\d+)$", line)
+            if not mo and line.strip():
+                print("%s(%s): can't parse %s" % (filename, lineno,
+                                                  line.strip()))
+            else:
+                symbol, number = mo.groups()
+                number = int(number)
+                assert symbol not in self.symbol2number
+                assert number not in self.number2symbol
+                self.symbol2number[symbol] = number
+                self.number2symbol[number] = symbol
+        return True
+
+    def parse_graminit_c(self, filename):
+        """Parse the .c file written by pgen.  (Internal)
+
+        The file looks as follows.  The first two lines are always this:
+
+        #include "pgenheaders.h"
+        #include "grammar.h"
+
+        After that come four blocks:
+
+        1) one or more state definitions
+        2) a table defining dfas
+        3) a table defining labels
+        4) a struct defining the grammar
+
+        A state definition has the following form:
+        - one or more arc arrays, each of the form:
+          static arc arcs_<n>_<m>[<k>] = {
+                  {<i>, <j>},
+                  ...
+          };
+        - followed by a state array, of the form:
+          static state states_<s>[<t>] = {
+                  {<k>, arcs_<n>_<m>},
+                  ...
+          };
+
+        """
+        try:
+            f = open(filename)
+        except OSError as err:
+            print("Can't open %s: %s" % (filename, err))
+            return False
+        # The code below essentially uses f's iterator-ness!
+        lineno = 0
+
+        # Expect the two #include lines
+        lineno, line = lineno+1, next(f)
+        assert line == '#include "pgenheaders.h"\n', (lineno, line)
+        lineno, line = lineno+1, next(f)
+        assert line == '#include "grammar.h"\n', (lineno, line)
+
+        # Parse the state definitions
+        lineno, line = lineno+1, next(f)
+        allarcs = {}
+        states = []
+        while line.startswith("static arc "):
+            while line.startswith("static arc "):
+                mo = re.match(r"static arc arcs_(\d+)_(\d+)\[(\d+)\] = {$",
+                              line)
+                assert mo, (lineno, line)
+                n, m, k = list(map(int, mo.groups()))
+                arcs = []
+                for _ in range(k):
+                    lineno, line = lineno+1, next(f)
+                    mo = re.match(r"\s+{(\d+), (\d+)},$", line)
+                    assert mo, (lineno, line)
+                    i, j = list(map(int, mo.groups()))
+                    arcs.append((i, j))
+                lineno, line = lineno+1, next(f)
+                assert line == "};\n", (lineno, line)
+                allarcs[(n, m)] = arcs
+                lineno, line = lineno+1, next(f)
+            mo = re.match(r"static state states_(\d+)\[(\d+)\] = {$", line)
+            assert mo, (lineno, line)
+            s, t = list(map(int, mo.groups()))
+            assert s == len(states), (lineno, line)
+            state = []
+            for _ in range(t):
+                lineno, line = lineno+1, next(f)
+                mo = re.match(r"\s+{(\d+), arcs_(\d+)_(\d+)},$", line)
+                assert mo, (lineno, line)
+                k, n, m = list(map(int, mo.groups()))
+                arcs = allarcs[n, m]
+                assert k == len(arcs), (lineno, line)
+                state.append(arcs)
+            states.append(state)
+            lineno, line = lineno+1, next(f)
+            assert line == "};\n", (lineno, line)
+            lineno, line = lineno+1, next(f)
+        self.states = states
+
+        # Parse the dfas
+        dfas = {}
+        mo = re.match(r"static dfa dfas\[(\d+)\] = {$", line)
+        assert mo, (lineno, line)
+        ndfas = int(mo.group(1))
+        for i in range(ndfas):
+            lineno, line = lineno+1, next(f)
+            mo = re.match(r'\s+{(\d+), "(\w+)", (\d+), (\d+), states_(\d+),$',
+                          line)
+            assert mo, (lineno, line)
+            symbol = mo.group(2)
+            number, x, y, z = list(map(int, mo.group(1, 3, 4, 5)))
+            assert self.symbol2number[symbol] == number, (lineno, line)
+            assert self.number2symbol[number] == symbol, (lineno, line)
+            assert x == 0, (lineno, line)
+            state = states[z]
+            assert y == len(state), (lineno, line)
+            lineno, line = lineno+1, next(f)
+            mo = re.match(r'\s+("(?:\\\d\d\d)*")},$', line)
+            assert mo, (lineno, line)
+            first = {}
+            rawbitset = eval(mo.group(1))
+            for i, c in enumerate(rawbitset):
+                byte = ord(c)
+                for j in range(8):
+                    if byte & (1<<j):
+                        first[i*8 + j] = 1
+            dfas[number] = (state, first)
+        lineno, line = lineno+1, next(f)
+        assert line == "};\n", (lineno, line)
+        self.dfas = dfas
+
+        # Parse the labels
+        labels = []
+        lineno, line = lineno+1, next(f)
+        mo = re.match(r"static label labels\[(\d+)\] = {$", line)
+        assert mo, (lineno, line)
+        nlabels = int(mo.group(1))
+        for i in range(nlabels):
+            lineno, line = lineno+1, next(f)
+            mo = re.match(r'\s+{(\d+), (0|"\w+")},$', line)
+            assert mo, (lineno, line)
+            x, y = mo.groups()
+            x = int(x)
+            if y == "0":
+                y = None
+            else:
+                y = eval(y)
+            labels.append((x, y))
+        lineno, line = lineno+1, next(f)
+        assert line == "};\n", (lineno, line)
+        self.labels = labels
+
+        # Parse the grammar struct
+        lineno, line = lineno+1, next(f)
+        assert line == "grammar _PyParser_Grammar = {\n", (lineno, line)
+        lineno, line = lineno+1, next(f)
+        mo = re.match(r"\s+(\d+),$", line)
+        assert mo, (lineno, line)
+        ndfas = int(mo.group(1))
+        assert ndfas == len(self.dfas)
+        lineno, line = lineno+1, next(f)
+        assert line == "\tdfas,\n", (lineno, line)
+        lineno, line = lineno+1, next(f)
+        mo = re.match(r"\s+{(\d+), labels},$", line)
+        assert mo, (lineno, line)
+        nlabels = int(mo.group(1))
+        assert nlabels == len(self.labels), (lineno, line)
+        lineno, line = lineno+1, next(f)
+        mo = re.match(r"\s+(\d+)$", line)
+        assert mo, (lineno, line)
+        start = int(mo.group(1))
+        assert start in self.number2symbol, (lineno, line)
+        self.start = start
+        lineno, line = lineno+1, next(f)
+        assert line == "};\n", (lineno, line)
+        try:
+            lineno, line = lineno+1, next(f)
+        except StopIteration:
+            pass
+        else:
+            assert 0, (lineno, line)
+
+    def finish_off(self):
+        """Create additional useful structures.  (Internal)."""
+        self.keywords = {} # map from keyword strings to arc labels
+        self.tokens = {}   # map from numeric token values to arc labels
+        for ilabel, (type, value) in enumerate(self.labels):
+            if type == token.NAME and value is not None:
+                self.keywords[value] = ilabel
+            elif value is None:
+                self.tokens[type] = ilabel
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pgen2/driver.py b/rootfs/usr/lib/python3.8/lib2to3/pgen2/driver.py
new file mode 100644
index 0000000..6471635
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pgen2/driver.py
@@ -0,0 +1,177 @@
+# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+# Modifications:
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Parser driver.
+
+This provides a high-level interface to parse a file into a syntax tree.
+
+"""
+
+__author__ = "Guido van Rossum <guido@python.org>"
+
+__all__ = ["Driver", "load_grammar"]
+
+# Python imports
+import io
+import os
+import logging
+import pkgutil
+import sys
+
+# Pgen imports
+from . import grammar, parse, token, tokenize, pgen
+
+
+class Driver(object):
+
+    def __init__(self, grammar, convert=None, logger=None):
+        self.grammar = grammar
+        if logger is None:
+            logger = logging.getLogger()
+        self.logger = logger
+        self.convert = convert
+
+    def parse_tokens(self, tokens, debug=False):
+        """Parse a series of tokens and return the syntax tree."""
+        # XXX Move the prefix computation into a wrapper around tokenize.
+        p = parse.Parser(self.grammar, self.convert)
+        p.setup()
+        lineno = 1
+        column = 0
+        type = value = start = end = line_text = None
+        prefix = ""
+        for quintuple in tokens:
+            type, value, start, end, line_text = quintuple
+            if start != (lineno, column):
+                assert (lineno, column) <= start, ((lineno, column), start)
+                s_lineno, s_column = start
+                if lineno < s_lineno:
+                    prefix += "\n" * (s_lineno - lineno)
+                    lineno = s_lineno
+                    column = 0
+                if column < s_column:
+                    prefix += line_text[column:s_column]
+                    column = s_column
+            if type in (tokenize.COMMENT, tokenize.NL):
+                prefix += value
+                lineno, column = end
+                if value.endswith("\n"):
+                    lineno += 1
+                    column = 0
+                continue
+            if type == token.OP:
+                type = grammar.opmap[value]
+            if debug:
+                self.logger.debug("%s %r (prefix=%r)",
+                                  token.tok_name[type], value, prefix)
+            if p.addtoken(type, value, (prefix, start)):
+                if debug:
+                    self.logger.debug("Stop.")
+                break
+            prefix = ""
+            lineno, column = end
+            if value.endswith("\n"):
+                lineno += 1
+                column = 0
+        else:
+            # We never broke out -- EOF is too soon (how can this happen???)
+            raise parse.ParseError("incomplete input",
+                                   type, value, (prefix, start))
+        return p.rootnode
+
+    def parse_stream_raw(self, stream, debug=False):
+        """Parse a stream and return the syntax tree."""
+        tokens = tokenize.generate_tokens(stream.readline)
+        return self.parse_tokens(tokens, debug)
+
+    def parse_stream(self, stream, debug=False):
+        """Parse a stream and return the syntax tree."""
+        return self.parse_stream_raw(stream, debug)
+
+    def parse_file(self, filename, encoding=None, debug=False):
+        """Parse a file and return the syntax tree."""
+        with io.open(filename, "r", encoding=encoding) as stream:
+            return self.parse_stream(stream, debug)
+
+    def parse_string(self, text, debug=False):
+        """Parse a string and return the syntax tree."""
+        tokens = tokenize.generate_tokens(io.StringIO(text).readline)
+        return self.parse_tokens(tokens, debug)
+
+
+def _generate_pickle_name(gt):
+    head, tail = os.path.splitext(gt)
+    if tail == ".txt":
+        tail = ""
+    return head + tail + ".".join(map(str, sys.version_info)) + ".pickle"
+
+
+def load_grammar(gt="Grammar.txt", gp=None,
+                 save=True, force=False, logger=None):
+    """Load the grammar (maybe from a pickle)."""
+    if logger is None:
+        logger = logging.getLogger()
+    gp = _generate_pickle_name(gt) if gp is None else gp
+    if force or not _newer(gp, gt):
+        logger.info("Generating grammar tables from %s", gt)
+        g = pgen.generate_grammar(gt)
+        if save:
+            logger.info("Writing grammar tables to %s", gp)
+            try:
+                g.dump(gp)
+            except OSError as e:
+                logger.info("Writing failed: %s", e)
+    else:
+        g = grammar.Grammar()
+        g.load(gp)
+    return g
+
+
+def _newer(a, b):
+    """Inquire whether file a was written since file b."""
+    if not os.path.exists(a):
+        return False
+    if not os.path.exists(b):
+        return True
+    return os.path.getmtime(a) >= os.path.getmtime(b)
+
+
+def load_packaged_grammar(package, grammar_source):
+    """Normally, loads a pickled grammar by doing
+        pkgutil.get_data(package, pickled_grammar)
+    where *pickled_grammar* is computed from *grammar_source* by adding the
+    Python version and using a ``.pickle`` extension.
+
+    However, if *grammar_source* is an extant file, load_grammar(grammar_source)
+    is called instead. This facilitates using a packaged grammar file when needed
+    but preserves load_grammar's automatic regeneration behavior when possible.
+
+    """
+    if os.path.isfile(grammar_source):
+        return load_grammar(grammar_source)
+    pickled_name = _generate_pickle_name(os.path.basename(grammar_source))
+    data = pkgutil.get_data(package, pickled_name)
+    g = grammar.Grammar()
+    g.loads(data)
+    return g
+
+
+def main(*args):
+    """Main program, when run as a script: produce grammar pickle files.
+
+    Calls load_grammar for each argument, a path to a grammar text file.
+    """
+    if not args:
+        args = sys.argv[1:]
+    logging.basicConfig(level=logging.INFO, stream=sys.stdout,
+                        format='%(message)s')
+    for gt in args:
+        load_grammar(gt, save=True, force=True)
+    return True
+
+if __name__ == "__main__":
+    sys.exit(int(not main()))
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pgen2/grammar.py b/rootfs/usr/lib/python3.8/lib2to3/pgen2/grammar.py
new file mode 100644
index 0000000..6a4d575
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pgen2/grammar.py
@@ -0,0 +1,188 @@
+# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""This module defines the data structures used to represent a grammar.
+
+These are a bit arcane because they are derived from the data
+structures used by Python's 'pgen' parser generator.
+
+There's also a table here mapping operators to their names in the
+token module; the Python tokenize module reports all operators as the
+fallback token code OP, but the parser needs the actual token code.
+
+"""
+
+# Python imports
+import pickle
+
+# Local imports
+from . import token
+
+
+class Grammar(object):
+    """Pgen parsing tables conversion class.
+
+    Once initialized, this class supplies the grammar tables for the
+    parsing engine implemented by parse.py.  The parsing engine
+    accesses the instance variables directly.  The class here does not
+    provide initialization of the tables; several subclasses exist to
+    do this (see the conv and pgen modules).
+
+    The load() method reads the tables from a pickle file, which is
+    much faster than the other ways offered by subclasses.  The pickle
+    file is written by calling dump() (after loading the grammar
+    tables using a subclass).  The report() method prints a readable
+    representation of the tables to stdout, for debugging.
+
+    The instance variables are as follows:
+
+    symbol2number -- a dict mapping symbol names to numbers.  Symbol
+                     numbers are always 256 or higher, to distinguish
+                     them from token numbers, which are between 0 and
+                     255 (inclusive).
+
+    number2symbol -- a dict mapping numbers to symbol names;
+                     these two are each other's inverse.
+
+    states        -- a list of DFAs, where each DFA is a list of
+                     states, each state is a list of arcs, and each
+                     arc is a (i, j) pair where i is a label and j is
+                     a state number.  The DFA number is the index into
+                     this list.  (This name is slightly confusing.)
+                     Final states are represented by a special arc of
+                     the form (0, j) where j is its own state number.
+
+    dfas          -- a dict mapping symbol numbers to (DFA, first)
+                     pairs, where DFA is an item from the states list
+                     above, and first is a set of tokens that can
+                     begin this grammar rule (represented by a dict
+                     whose values are always 1).
+
+    labels        -- a list of (x, y) pairs where x is either a token
+                     number or a symbol number, and y is either None
+                     or a string; the strings are keywords.  The label
+                     number is the index in this list; label numbers
+                     are used to mark state transitions (arcs) in the
+                     DFAs.
+
+    start         -- the number of the grammar's start symbol.
+
+    keywords      -- a dict mapping keyword strings to arc labels.
+
+    tokens        -- a dict mapping token numbers to arc labels.
+
+    """
+
+    def __init__(self):
+        self.symbol2number = {}
+        self.number2symbol = {}
+        self.states = []
+        self.dfas = {}
+        self.labels = [(0, "EMPTY")]
+        self.keywords = {}
+        self.tokens = {}
+        self.symbol2label = {}
+        self.start = 256
+
+    def dump(self, filename):
+        """Dump the grammar tables to a pickle file."""
+        with open(filename, "wb") as f:
+            pickle.dump(self.__dict__, f, pickle.HIGHEST_PROTOCOL)
+
+    def load(self, filename):
+        """Load the grammar tables from a pickle file."""
+        with open(filename, "rb") as f:
+            d = pickle.load(f)
+        self.__dict__.update(d)
+
+    def loads(self, pkl):
+        """Load the grammar tables from a pickle bytes object."""
+        self.__dict__.update(pickle.loads(pkl))
+
+    def copy(self):
+        """
+        Copy the grammar.
+        """
+        new = self.__class__()
+        for dict_attr in ("symbol2number", "number2symbol", "dfas", "keywords",
+                          "tokens", "symbol2label"):
+            setattr(new, dict_attr, getattr(self, dict_attr).copy())
+        new.labels = self.labels[:]
+        new.states = self.states[:]
+        new.start = self.start
+        return new
+
+    def report(self):
+        """Dump the grammar tables to standard output, for debugging."""
+        from pprint import pprint
+        print("s2n")
+        pprint(self.symbol2number)
+        print("n2s")
+        pprint(self.number2symbol)
+        print("states")
+        pprint(self.states)
+        print("dfas")
+        pprint(self.dfas)
+        print("labels")
+        pprint(self.labels)
+        print("start", self.start)
+
+
+# Map from operator to number (since tokenize doesn't do this)
+
+opmap_raw = """
+( LPAR
+) RPAR
+[ LSQB
+] RSQB
+: COLON
+, COMMA
+; SEMI
++ PLUS
+- MINUS
+* STAR
+/ SLASH
+| VBAR
+& AMPER
+< LESS
+> GREATER
+= EQUAL
+. DOT
+% PERCENT
+` BACKQUOTE
+{ LBRACE
+} RBRACE
+@ AT
+@= ATEQUAL
+== EQEQUAL
+!= NOTEQUAL
+<> NOTEQUAL
+<= LESSEQUAL
+>= GREATEREQUAL
+~ TILDE
+^ CIRCUMFLEX
+<< LEFTSHIFT
+>> RIGHTSHIFT
+** DOUBLESTAR
++= PLUSEQUAL
+-= MINEQUAL
+*= STAREQUAL
+/= SLASHEQUAL
+%= PERCENTEQUAL
+&= AMPEREQUAL
+|= VBAREQUAL
+^= CIRCUMFLEXEQUAL
+<<= LEFTSHIFTEQUAL
+>>= RIGHTSHIFTEQUAL
+**= DOUBLESTAREQUAL
+// DOUBLESLASH
+//= DOUBLESLASHEQUAL
+-> RARROW
+:= COLONEQUAL
+"""
+
+opmap = {}
+for line in opmap_raw.splitlines():
+    if line:
+        op, name = line.split()
+        opmap[op] = getattr(token, name)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pgen2/literals.py b/rootfs/usr/lib/python3.8/lib2to3/pgen2/literals.py
new file mode 100644
index 0000000..b9b63e6
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pgen2/literals.py
@@ -0,0 +1,60 @@
+# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Safely evaluate Python string literals without using eval()."""
+
+import re
+
+simple_escapes = {"a": "\a",
+                  "b": "\b",
+                  "f": "\f",
+                  "n": "\n",
+                  "r": "\r",
+                  "t": "\t",
+                  "v": "\v",
+                  "'": "'",
+                  '"': '"',
+                  "\\": "\\"}
+
+def escape(m):
+    all, tail = m.group(0, 1)
+    assert all.startswith("\\")
+    esc = simple_escapes.get(tail)
+    if esc is not None:
+        return esc
+    if tail.startswith("x"):
+        hexes = tail[1:]
+        if len(hexes) < 2:
+            raise ValueError("invalid hex string escape ('\\%s')" % tail)
+        try:
+            i = int(hexes, 16)
+        except ValueError:
+            raise ValueError("invalid hex string escape ('\\%s')" % tail) from None
+    else:
+        try:
+            i = int(tail, 8)
+        except ValueError:
+            raise ValueError("invalid octal string escape ('\\%s')" % tail) from None
+    return chr(i)
+
+def evalString(s):
+    assert s.startswith("'") or s.startswith('"'), repr(s[:1])
+    q = s[0]
+    if s[:3] == q*3:
+        q = q*3
+    assert s.endswith(q), repr(s[-len(q):])
+    assert len(s) >= 2*len(q)
+    s = s[len(q):-len(q)]
+    return re.sub(r"\\(\'|\"|\\|[abfnrtv]|x.{0,2}|[0-7]{1,3})", escape, s)
+
+def test():
+    for i in range(256):
+        c = chr(i)
+        s = repr(c)
+        e = evalString(s)
+        if e != c:
+            print(i, c, s, e)
+
+
+if __name__ == "__main__":
+    test()
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pgen2/parse.py b/rootfs/usr/lib/python3.8/lib2to3/pgen2/parse.py
new file mode 100644
index 0000000..cf3fcf7
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pgen2/parse.py
@@ -0,0 +1,204 @@
+# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Parser engine for the grammar tables generated by pgen.
+
+The grammar table must be loaded first.
+
+See Parser/parser.c in the Python distribution for additional info on
+how this parsing engine works.
+
+"""
+
+# Local imports
+from . import token
+
+class ParseError(Exception):
+    """Exception to signal the parser is stuck."""
+
+    def __init__(self, msg, type, value, context):
+        Exception.__init__(self, "%s: type=%r, value=%r, context=%r" %
+                           (msg, type, value, context))
+        self.msg = msg
+        self.type = type
+        self.value = value
+        self.context = context
+
+    def __reduce__(self):
+        return type(self), (self.msg, self.type, self.value, self.context)
+
+class Parser(object):
+    """Parser engine.
+
+    The proper usage sequence is:
+
+    p = Parser(grammar, [converter])  # create instance
+    p.setup([start])                  # prepare for parsing
+    <for each input token>:
+        if p.addtoken(...):           # parse a token; may raise ParseError
+            break
+    root = p.rootnode                 # root of abstract syntax tree
+
+    A Parser instance may be reused by calling setup() repeatedly.
+
+    A Parser instance contains state pertaining to the current token
+    sequence, and should not be used concurrently by different threads
+    to parse separate token sequences.
+
+    See driver.py for how to get input tokens by tokenizing a file or
+    string.
+
+    Parsing is complete when addtoken() returns True; the root of the
+    abstract syntax tree can then be retrieved from the rootnode
+    instance variable.  When a syntax error occurs, addtoken() raises
+    the ParseError exception.  There is no error recovery; the parser
+    cannot be used after a syntax error was reported (but it can be
+    reinitialized by calling setup()).
+
+    """
+
+    def __init__(self, grammar, convert=None):
+        """Constructor.
+
+        The grammar argument is a grammar.Grammar instance; see the
+        grammar module for more information.
+
+        The parser is not ready yet for parsing; you must call the
+        setup() method to get it started.
+
+        The optional convert argument is a function mapping concrete
+        syntax tree nodes to abstract syntax tree nodes.  If not
+        given, no conversion is done and the syntax tree produced is
+        the concrete syntax tree.  If given, it must be a function of
+        two arguments, the first being the grammar (a grammar.Grammar
+        instance), and the second being the concrete syntax tree node
+        to be converted.  The syntax tree is converted from the bottom
+        up.
+
+        A concrete syntax tree node is a (type, value, context, nodes)
+        tuple, where type is the node type (a token or symbol number),
+        value is None for symbols and a string for tokens, context is
+        None or an opaque value used for error reporting (typically a
+        (lineno, offset) pair), and nodes is a list of children for
+        symbols, and None for tokens.
+
+        An abstract syntax tree node may be anything; this is entirely
+        up to the converter function.
+
+        """
+        self.grammar = grammar
+        self.convert = convert or (lambda grammar, node: node)
+
+    def setup(self, start=None):
+        """Prepare for parsing.
+
+        This *must* be called before starting to parse.
+
+        The optional argument is an alternative start symbol; it
+        defaults to the grammar's start symbol.
+
+        You can use a Parser instance to parse any number of programs;
+        each time you call setup() the parser is reset to an initial
+        state determined by the (implicit or explicit) start symbol.
+
+        """
+        if start is None:
+            start = self.grammar.start
+        # Each stack entry is a tuple: (dfa, state, node).
+        # A node is a tuple: (type, value, context, children),
+        # where children is a list of nodes or None, and context may be None.
+        newnode = (start, None, None, [])
+        stackentry = (self.grammar.dfas[start], 0, newnode)
+        self.stack = [stackentry]
+        self.rootnode = None
+        self.used_names = set() # Aliased to self.rootnode.used_names in pop()
+
+    def addtoken(self, type, value, context):
+        """Add a token; return True iff this is the end of the program."""
+        # Map from token to label
+        ilabel = self.classify(type, value, context)
+        # Loop until the token is shifted; may raise exceptions
+        while True:
+            dfa, state, node = self.stack[-1]
+            states, first = dfa
+            arcs = states[state]
+            # Look for a state with this label
+            for i, newstate in arcs:
+                t, v = self.grammar.labels[i]
+                if ilabel == i:
+                    # Look it up in the list of labels
+                    assert t < 256
+                    # Shift a token; we're done with it
+                    self.shift(type, value, newstate, context)
+                    # Pop while we are in an accept-only state
+                    state = newstate
+                    while states[state] == [(0, state)]:
+                        self.pop()
+                        if not self.stack:
+                            # Done parsing!
+                            return True
+                        dfa, state, node = self.stack[-1]
+                        states, first = dfa
+                    # Done with this token
+                    return False
+                elif t >= 256:
+                    # See if it's a symbol and if we're in its first set
+                    itsdfa = self.grammar.dfas[t]
+                    itsstates, itsfirst = itsdfa
+                    if ilabel in itsfirst:
+                        # Push a symbol
+                        self.push(t, self.grammar.dfas[t], newstate, context)
+                        break # To continue the outer while loop
+            else:
+                if (0, state) in arcs:
+                    # An accepting state, pop it and try something else
+                    self.pop()
+                    if not self.stack:
+                        # Done parsing, but another token is input
+                        raise ParseError("too much input",
+                                         type, value, context)
+                else:
+                    # No success finding a transition
+                    raise ParseError("bad input", type, value, context)
+
+    def classify(self, type, value, context):
+        """Turn a token into a label.  (Internal)"""
+        if type == token.NAME:
+            # Keep a listing of all used names
+            self.used_names.add(value)
+            # Check for reserved words
+            ilabel = self.grammar.keywords.get(value)
+            if ilabel is not None:
+                return ilabel
+        ilabel = self.grammar.tokens.get(type)
+        if ilabel is None:
+            raise ParseError("bad token", type, value, context)
+        return ilabel
+
+    def shift(self, type, value, newstate, context):
+        """Shift a token.  (Internal)"""
+        dfa, state, node = self.stack[-1]
+        newnode = (type, value, context, None)
+        newnode = self.convert(self.grammar, newnode)
+        if newnode is not None:
+            node[-1].append(newnode)
+        self.stack[-1] = (dfa, newstate, node)
+
+    def push(self, type, newdfa, newstate, context):
+        """Push a nonterminal.  (Internal)"""
+        dfa, state, node = self.stack[-1]
+        newnode = (type, None, context, [])
+        self.stack[-1] = (dfa, newstate, node)
+        self.stack.append((newdfa, 0, newnode))
+
+    def pop(self):
+        """Pop a nonterminal.  (Internal)"""
+        popdfa, popstate, popnode = self.stack.pop()
+        newnode = self.convert(self.grammar, popnode)
+        if newnode is not None:
+            if self.stack:
+                dfa, state, node = self.stack[-1]
+                node[-1].append(newnode)
+            else:
+                self.rootnode = newnode
+                self.rootnode.used_names = self.used_names
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pgen2/pgen.py b/rootfs/usr/lib/python3.8/lib2to3/pgen2/pgen.py
new file mode 100644
index 0000000..b0cbd16
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pgen2/pgen.py
@@ -0,0 +1,386 @@
+# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+# Pgen imports
+from . import grammar, token, tokenize
+
+class PgenGrammar(grammar.Grammar):
+    pass
+
+class ParserGenerator(object):
+
+    def __init__(self, filename, stream=None):
+        close_stream = None
+        if stream is None:
+            stream = open(filename)
+            close_stream = stream.close
+        self.filename = filename
+        self.stream = stream
+        self.generator = tokenize.generate_tokens(stream.readline)
+        self.gettoken() # Initialize lookahead
+        self.dfas, self.startsymbol = self.parse()
+        if close_stream is not None:
+            close_stream()
+        self.first = {} # map from symbol name to set of tokens
+        self.addfirstsets()
+
+    def make_grammar(self):
+        c = PgenGrammar()
+        names = list(self.dfas.keys())
+        names.sort()
+        names.remove(self.startsymbol)
+        names.insert(0, self.startsymbol)
+        for name in names:
+            i = 256 + len(c.symbol2number)
+            c.symbol2number[name] = i
+            c.number2symbol[i] = name
+        for name in names:
+            dfa = self.dfas[name]
+            states = []
+            for state in dfa:
+                arcs = []
+                for label, next in sorted(state.arcs.items()):
+                    arcs.append((self.make_label(c, label), dfa.index(next)))
+                if state.isfinal:
+                    arcs.append((0, dfa.index(state)))
+                states.append(arcs)
+            c.states.append(states)
+            c.dfas[c.symbol2number[name]] = (states, self.make_first(c, name))
+        c.start = c.symbol2number[self.startsymbol]
+        return c
+
+    def make_first(self, c, name):
+        rawfirst = self.first[name]
+        first = {}
+        for label in sorted(rawfirst):
+            ilabel = self.make_label(c, label)
+            ##assert ilabel not in first # XXX failed on <> ... !=
+            first[ilabel] = 1
+        return first
+
+    def make_label(self, c, label):
+        # XXX Maybe this should be a method on a subclass of converter?
+        ilabel = len(c.labels)
+        if label[0].isalpha():
+            # Either a symbol name or a named token
+            if label in c.symbol2number:
+                # A symbol name (a non-terminal)
+                if label in c.symbol2label:
+                    return c.symbol2label[label]
+                else:
+                    c.labels.append((c.symbol2number[label], None))
+                    c.symbol2label[label] = ilabel
+                    return ilabel
+            else:
+                # A named token (NAME, NUMBER, STRING)
+                itoken = getattr(token, label, None)
+                assert isinstance(itoken, int), label
+                assert itoken in token.tok_name, label
+                if itoken in c.tokens:
+                    return c.tokens[itoken]
+                else:
+                    c.labels.append((itoken, None))
+                    c.tokens[itoken] = ilabel
+                    return ilabel
+        else:
+            # Either a keyword or an operator
+            assert label[0] in ('"', "'"), label
+            value = eval(label)
+            if value[0].isalpha():
+                # A keyword
+                if value in c.keywords:
+                    return c.keywords[value]
+                else:
+                    c.labels.append((token.NAME, value))
+                    c.keywords[value] = ilabel
+                    return ilabel
+            else:
+                # An operator (any non-numeric token)
+                itoken = grammar.opmap[value] # Fails if unknown token
+                if itoken in c.tokens:
+                    return c.tokens[itoken]
+                else:
+                    c.labels.append((itoken, None))
+                    c.tokens[itoken] = ilabel
+                    return ilabel
+
+    def addfirstsets(self):
+        names = list(self.dfas.keys())
+        names.sort()
+        for name in names:
+            if name not in self.first:
+                self.calcfirst(name)
+            #print name, self.first[name].keys()
+
+    def calcfirst(self, name):
+        dfa = self.dfas[name]
+        self.first[name] = None # dummy to detect left recursion
+        state = dfa[0]
+        totalset = {}
+        overlapcheck = {}
+        for label, next in state.arcs.items():
+            if label in self.dfas:
+                if label in self.first:
+                    fset = self.first[label]
+                    if fset is None:
+                        raise ValueError("recursion for rule %r" % name)
+                else:
+                    self.calcfirst(label)
+                    fset = self.first[label]
+                totalset.update(fset)
+                overlapcheck[label] = fset
+            else:
+                totalset[label] = 1
+                overlapcheck[label] = {label: 1}
+        inverse = {}
+        for label, itsfirst in overlapcheck.items():
+            for symbol in itsfirst:
+                if symbol in inverse:
+                    raise ValueError("rule %s is ambiguous; %s is in the"
+                                     " first sets of %s as well as %s" %
+                                     (name, symbol, label, inverse[symbol]))
+                inverse[symbol] = label
+        self.first[name] = totalset
+
+    def parse(self):
+        dfas = {}
+        startsymbol = None
+        # MSTART: (NEWLINE | RULE)* ENDMARKER
+        while self.type != token.ENDMARKER:
+            while self.type == token.NEWLINE:
+                self.gettoken()
+            # RULE: NAME ':' RHS NEWLINE
+            name = self.expect(token.NAME)
+            self.expect(token.OP, ":")
+            a, z = self.parse_rhs()
+            self.expect(token.NEWLINE)
+            #self.dump_nfa(name, a, z)
+            dfa = self.make_dfa(a, z)
+            #self.dump_dfa(name, dfa)
+            oldlen = len(dfa)
+            self.simplify_dfa(dfa)
+            newlen = len(dfa)
+            dfas[name] = dfa
+            #print name, oldlen, newlen
+            if startsymbol is None:
+                startsymbol = name
+        return dfas, startsymbol
+
+    def make_dfa(self, start, finish):
+        # To turn an NFA into a DFA, we define the states of the DFA
+        # to correspond to *sets* of states of the NFA.  Then do some
+        # state reduction.  Let's represent sets as dicts with 1 for
+        # values.
+        assert isinstance(start, NFAState)
+        assert isinstance(finish, NFAState)
+        def closure(state):
+            base = {}
+            addclosure(state, base)
+            return base
+        def addclosure(state, base):
+            assert isinstance(state, NFAState)
+            if state in base:
+                return
+            base[state] = 1
+            for label, next in state.arcs:
+                if label is None:
+                    addclosure(next, base)
+        states = [DFAState(closure(start), finish)]
+        for state in states: # NB states grows while we're iterating
+            arcs = {}
+            for nfastate in state.nfaset:
+                for label, next in nfastate.arcs:
+                    if label is not None:
+                        addclosure(next, arcs.setdefault(label, {}))
+            for label, nfaset in sorted(arcs.items()):
+                for st in states:
+                    if st.nfaset == nfaset:
+                        break
+                else:
+                    st = DFAState(nfaset, finish)
+                    states.append(st)
+                state.addarc(st, label)
+        return states # List of DFAState instances; first one is start
+
+    def dump_nfa(self, name, start, finish):
+        print("Dump of NFA for", name)
+        todo = [start]
+        for i, state in enumerate(todo):
+            print("  State", i, state is finish and "(final)" or "")
+            for label, next in state.arcs:
+                if next in todo:
+                    j = todo.index(next)
+                else:
+                    j = len(todo)
+                    todo.append(next)
+                if label is None:
+                    print("    -> %d" % j)
+                else:
+                    print("    %s -> %d" % (label, j))
+
+    def dump_dfa(self, name, dfa):
+        print("Dump of DFA for", name)
+        for i, state in enumerate(dfa):
+            print("  State", i, state.isfinal and "(final)" or "")
+            for label, next in sorted(state.arcs.items()):
+                print("    %s -> %d" % (label, dfa.index(next)))
+
+    def simplify_dfa(self, dfa):
+        # This is not theoretically optimal, but works well enough.
+        # Algorithm: repeatedly look for two states that have the same
+        # set of arcs (same labels pointing to the same nodes) and
+        # unify them, until things stop changing.
+
+        # dfa is a list of DFAState instances
+        changes = True
+        while changes:
+            changes = False
+            for i, state_i in enumerate(dfa):
+                for j in range(i+1, len(dfa)):
+                    state_j = dfa[j]
+                    if state_i == state_j:
+                        #print "  unify", i, j
+                        del dfa[j]
+                        for state in dfa:
+                            state.unifystate(state_j, state_i)
+                        changes = True
+                        break
+
+    def parse_rhs(self):
+        # RHS: ALT ('|' ALT)*
+        a, z = self.parse_alt()
+        if self.value != "|":
+            return a, z
+        else:
+            aa = NFAState()
+            zz = NFAState()
+            aa.addarc(a)
+            z.addarc(zz)
+            while self.value == "|":
+                self.gettoken()
+                a, z = self.parse_alt()
+                aa.addarc(a)
+                z.addarc(zz)
+            return aa, zz
+
+    def parse_alt(self):
+        # ALT: ITEM+
+        a, b = self.parse_item()
+        while (self.value in ("(", "[") or
+               self.type in (token.NAME, token.STRING)):
+            c, d = self.parse_item()
+            b.addarc(c)
+            b = d
+        return a, b
+
+    def parse_item(self):
+        # ITEM: '[' RHS ']' | ATOM ['+' | '*']
+        if self.value == "[":
+            self.gettoken()
+            a, z = self.parse_rhs()
+            self.expect(token.OP, "]")
+            a.addarc(z)
+            return a, z
+        else:
+            a, z = self.parse_atom()
+            value = self.value
+            if value not in ("+", "*"):
+                return a, z
+            self.gettoken()
+            z.addarc(a)
+            if value == "+":
+                return a, z
+            else:
+                return a, a
+
+    def parse_atom(self):
+        # ATOM: '(' RHS ')' | NAME | STRING
+        if self.value == "(":
+            self.gettoken()
+            a, z = self.parse_rhs()
+            self.expect(token.OP, ")")
+            return a, z
+        elif self.type in (token.NAME, token.STRING):
+            a = NFAState()
+            z = NFAState()
+            a.addarc(z, self.value)
+            self.gettoken()
+            return a, z
+        else:
+            self.raise_error("expected (...) or NAME or STRING, got %s/%s",
+                             self.type, self.value)
+
+    def expect(self, type, value=None):
+        if self.type != type or (value is not None and self.value != value):
+            self.raise_error("expected %s/%s, got %s/%s",
+                             type, value, self.type, self.value)
+        value = self.value
+        self.gettoken()
+        return value
+
+    def gettoken(self):
+        tup = next(self.generator)
+        while tup[0] in (tokenize.COMMENT, tokenize.NL):
+            tup = next(self.generator)
+        self.type, self.value, self.begin, self.end, self.line = tup
+        #print token.tok_name[self.type], repr(self.value)
+
+    def raise_error(self, msg, *args):
+        if args:
+            try:
+                msg = msg % args
+            except:
+                msg = " ".join([msg] + list(map(str, args)))
+        raise SyntaxError(msg, (self.filename, self.end[0],
+                                self.end[1], self.line))
+
+class NFAState(object):
+
+    def __init__(self):
+        self.arcs = [] # list of (label, NFAState) pairs
+
+    def addarc(self, next, label=None):
+        assert label is None or isinstance(label, str)
+        assert isinstance(next, NFAState)
+        self.arcs.append((label, next))
+
+class DFAState(object):
+
+    def __init__(self, nfaset, final):
+        assert isinstance(nfaset, dict)
+        assert isinstance(next(iter(nfaset)), NFAState)
+        assert isinstance(final, NFAState)
+        self.nfaset = nfaset
+        self.isfinal = final in nfaset
+        self.arcs = {} # map from label to DFAState
+
+    def addarc(self, next, label):
+        assert isinstance(label, str)
+        assert label not in self.arcs
+        assert isinstance(next, DFAState)
+        self.arcs[label] = next
+
+    def unifystate(self, old, new):
+        for label, next in self.arcs.items():
+            if next is old:
+                self.arcs[label] = new
+
+    def __eq__(self, other):
+        # Equality test -- ignore the nfaset instance variable
+        assert isinstance(other, DFAState)
+        if self.isfinal != other.isfinal:
+            return False
+        # Can't just return self.arcs == other.arcs, because that
+        # would invoke this method recursively, with cycles...
+        if len(self.arcs) != len(other.arcs):
+            return False
+        for label, next in self.arcs.items():
+            if next is not other.arcs.get(label):
+                return False
+        return True
+
+    __hash__ = None # For Py3 compatibility.
+
+def generate_grammar(filename="Grammar.txt"):
+    p = ParserGenerator(filename)
+    return p.make_grammar()
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pgen2/token.py b/rootfs/usr/lib/python3.8/lib2to3/pgen2/token.py
new file mode 100755
index 0000000..5f6612f
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pgen2/token.py
@@ -0,0 +1,86 @@
+#! /usr/bin/env python3
+
+"""Token constants (from "token.h")."""
+
+#  Taken from Python (r53757) and modified to include some tokens
+#   originally monkeypatched in by pgen2.tokenize
+
+#--start constants--
+ENDMARKER = 0
+NAME = 1
+NUMBER = 2
+STRING = 3
+NEWLINE = 4
+INDENT = 5
+DEDENT = 6
+LPAR = 7
+RPAR = 8
+LSQB = 9
+RSQB = 10
+COLON = 11
+COMMA = 12
+SEMI = 13
+PLUS = 14
+MINUS = 15
+STAR = 16
+SLASH = 17
+VBAR = 18
+AMPER = 19
+LESS = 20
+GREATER = 21
+EQUAL = 22
+DOT = 23
+PERCENT = 24
+BACKQUOTE = 25
+LBRACE = 26
+RBRACE = 27
+EQEQUAL = 28
+NOTEQUAL = 29
+LESSEQUAL = 30
+GREATEREQUAL = 31
+TILDE = 32
+CIRCUMFLEX = 33
+LEFTSHIFT = 34
+RIGHTSHIFT = 35
+DOUBLESTAR = 36
+PLUSEQUAL = 37
+MINEQUAL = 38
+STAREQUAL = 39
+SLASHEQUAL = 40
+PERCENTEQUAL = 41
+AMPEREQUAL = 42
+VBAREQUAL = 43
+CIRCUMFLEXEQUAL = 44
+LEFTSHIFTEQUAL = 45
+RIGHTSHIFTEQUAL = 46
+DOUBLESTAREQUAL = 47
+DOUBLESLASH = 48
+DOUBLESLASHEQUAL = 49
+AT = 50
+ATEQUAL = 51
+OP = 52
+COMMENT = 53
+NL = 54
+RARROW = 55
+AWAIT = 56
+ASYNC = 57
+ERRORTOKEN = 58
+COLONEQUAL = 59
+N_TOKENS = 60
+NT_OFFSET = 256
+#--end constants--
+
+tok_name = {}
+for _name, _value in list(globals().items()):
+    if type(_value) is type(0):
+        tok_name[_value] = _name
+
+
+def ISTERMINAL(x):
+    return x < NT_OFFSET
+
+def ISNONTERMINAL(x):
+    return x >= NT_OFFSET
+
+def ISEOF(x):
+    return x == ENDMARKER
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pgen2/tokenize.py b/rootfs/usr/lib/python3.8/lib2to3/pgen2/tokenize.py
new file mode 100644
index 0000000..0e2685d
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pgen2/tokenize.py
@@ -0,0 +1,563 @@
+# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006 Python Software Foundation.
+# All rights reserved.
+
+"""Tokenization help for Python programs.
+
+generate_tokens(readline) is a generator that breaks a stream of
+text into Python tokens.  It accepts a readline-like method which is called
+repeatedly to get the next line of input (or "" for EOF).  It generates
+5-tuples with these members:
+
+    the token type (see token.py)
+    the token (a string)
+    the starting (row, column) indices of the token (a 2-tuple of ints)
+    the ending (row, column) indices of the token (a 2-tuple of ints)
+    the original line (string)
+
+It is designed to match the working of the Python tokenizer exactly, except
+that it produces COMMENT tokens for comments and gives type OP for all
+operators
+
+Older entry points
+    tokenize_loop(readline, tokeneater)
+    tokenize(readline, tokeneater=printtoken)
+are the same, except instead of generating tokens, tokeneater is a callback
+function to which the 5 fields described above are passed as 5 arguments,
+each time a new token is found."""
+
+__author__ = 'Ka-Ping Yee <ping@lfw.org>'
+__credits__ = \
+    'GvR, ESR, Tim Peters, Thomas Wouters, Fred Drake, Skip Montanaro'
+
+import string, re
+from codecs import BOM_UTF8, lookup
+from lib2to3.pgen2.token import *
+
+from . import token
+__all__ = [x for x in dir(token) if x[0] != '_'] + ["tokenize",
+           "generate_tokens", "untokenize"]
+del token
+
+try:
+    bytes
+except NameError:
+    # Support bytes type in Python <= 2.5, so 2to3 turns itself into
+    # valid Python 3 code.
+    bytes = str
+
+def group(*choices): return '(' + '|'.join(choices) + ')'
+def any(*choices): return group(*choices) + '*'
+def maybe(*choices): return group(*choices) + '?'
+def _combinations(*l):
+    return set(
+        x + y for x in l for y in l + ("",) if x.casefold() != y.casefold()
+    )
+
+Whitespace = r'[ \f\t]*'
+Comment = r'#[^\r\n]*'
+Ignore = Whitespace + any(r'\\\r?\n' + Whitespace) + maybe(Comment)
+Name = r'\w+'
+
+Binnumber = r'0[bB]_?[01]+(?:_[01]+)*'
+Hexnumber = r'0[xX]_?[\da-fA-F]+(?:_[\da-fA-F]+)*[lL]?'
+Octnumber = r'0[oO]?_?[0-7]+(?:_[0-7]+)*[lL]?'
+Decnumber = group(r'[1-9]\d*(?:_\d+)*[lL]?', '0[lL]?')
+Intnumber = group(Binnumber, Hexnumber, Octnumber, Decnumber)
+Exponent = r'[eE][-+]?\d+(?:_\d+)*'
+Pointfloat = group(r'\d+(?:_\d+)*\.(?:\d+(?:_\d+)*)?', r'\.\d+(?:_\d+)*') + maybe(Exponent)
+Expfloat = r'\d+(?:_\d+)*' + Exponent
+Floatnumber = group(Pointfloat, Expfloat)
+Imagnumber = group(r'\d+(?:_\d+)*[jJ]', Floatnumber + r'[jJ]')
+Number = group(Imagnumber, Floatnumber, Intnumber)
+
+# Tail end of ' string.
+Single = r"[^'\\]*(?:\\.[^'\\]*)*'"
+# Tail end of " string.
+Double = r'[^"\\]*(?:\\.[^"\\]*)*"'
+# Tail end of ''' string.
+Single3 = r"[^'\\]*(?:(?:\\.|'(?!''))[^'\\]*)*'''"
+# Tail end of """ string.
+Double3 = r'[^"\\]*(?:(?:\\.|"(?!""))[^"\\]*)*"""'
+_litprefix = r"(?:[uUrRbBfF]|[rR][fFbB]|[fFbBuU][rR])?"
+Triple = group(_litprefix + "'''", _litprefix + '"""')
+# Single-line ' or " string.
+String = group(_litprefix + r"'[^\n'\\]*(?:\\.[^\n'\\]*)*'",
+               _litprefix + r'"[^\n"\\]*(?:\\.[^\n"\\]*)*"')
+
+# Because of leftmost-then-longest match semantics, be sure to put the
+# longest operators first (e.g., if = came before ==, == would get
+# recognized as two instances of =).
+Operator = group(r"\*\*=?", r">>=?", r"<<=?", r"<>", r"!=",
+                 r"//=?", r"->",
+                 r"[+\-*/%&@|^=<>]=?",
+                 r"~")
+
+Bracket = '[][(){}]'
+Special = group(r'\r?\n', r':=', r'[:;.,`@]')
+Funny = group(Operator, Bracket, Special)
+
+PlainToken = group(Number, Funny, String, Name)
+Token = Ignore + PlainToken
+
+# First (or only) line of ' or " string.
+ContStr = group(_litprefix + r"'[^\n'\\]*(?:\\.[^\n'\\]*)*" +
+                group("'", r'\\\r?\n'),
+                _litprefix + r'"[^\n"\\]*(?:\\.[^\n"\\]*)*' +
+                group('"', r'\\\r?\n'))
+PseudoExtras = group(r'\\\r?\n', Comment, Triple)
+PseudoToken = Whitespace + group(PseudoExtras, Number, Funny, ContStr, Name)
+
+tokenprog, pseudoprog, single3prog, double3prog = map(
+    re.compile, (Token, PseudoToken, Single3, Double3))
+
+_strprefixes = (
+    _combinations('r', 'R', 'f', 'F') |
+    _combinations('r', 'R', 'b', 'B') |
+    {'u', 'U', 'ur', 'uR', 'Ur', 'UR'}
+)
+
+endprogs = {"'": re.compile(Single), '"': re.compile(Double),
+            "'''": single3prog, '"""': double3prog,
+            **{f"{prefix}'''": single3prog for prefix in _strprefixes},
+            **{f'{prefix}"""': double3prog for prefix in _strprefixes},
+            **{prefix: None for prefix in _strprefixes}}
+
+triple_quoted = (
+    {"'''", '"""'} |
+    {f"{prefix}'''" for prefix in _strprefixes} |
+    {f'{prefix}"""' for prefix in _strprefixes}
+)
+single_quoted = (
+    {"'", '"'} |
+    {f"{prefix}'" for prefix in _strprefixes} |
+    {f'{prefix}"' for prefix in _strprefixes}
+)
+
+tabsize = 8
+
+class TokenError(Exception): pass
+
+class StopTokenizing(Exception): pass
+
+def printtoken(type, token, xxx_todo_changeme, xxx_todo_changeme1, line): # for testing
+    (srow, scol) = xxx_todo_changeme
+    (erow, ecol) = xxx_todo_changeme1
+    print("%d,%d-%d,%d:\t%s\t%s" % \
+        (srow, scol, erow, ecol, tok_name[type], repr(token)))
+
+def tokenize(readline, tokeneater=printtoken):
+    """
+    The tokenize() function accepts two parameters: one representing the
+    input stream, and one providing an output mechanism for tokenize().
+
+    The first parameter, readline, must be a callable object which provides
+    the same interface as the readline() method of built-in file objects.
+    Each call to the function should return one line of input as a string.
+
+    The second parameter, tokeneater, must also be a callable object. It is
+    called once for each token, with five arguments, corresponding to the
+    tuples generated by generate_tokens().
+    """
+    try:
+        tokenize_loop(readline, tokeneater)
+    except StopTokenizing:
+        pass
+
+# backwards compatible interface
+def tokenize_loop(readline, tokeneater):
+    for token_info in generate_tokens(readline):
+        tokeneater(*token_info)
+
+class Untokenizer:
+
+    def __init__(self):
+        self.tokens = []
+        self.prev_row = 1
+        self.prev_col = 0
+
+    def add_whitespace(self, start):
+        row, col = start
+        assert row <= self.prev_row
+        col_offset = col - self.prev_col
+        if col_offset:
+            self.tokens.append(" " * col_offset)
+
+    def untokenize(self, iterable):
+        for t in iterable:
+            if len(t) == 2:
+                self.compat(t, iterable)
+                break
+            tok_type, token, start, end, line = t
+            self.add_whitespace(start)
+            self.tokens.append(token)
+            self.prev_row, self.prev_col = end
+            if tok_type in (NEWLINE, NL):
+                self.prev_row += 1
+                self.prev_col = 0
+        return "".join(self.tokens)
+
+    def compat(self, token, iterable):
+        startline = False
+        indents = []
+        toks_append = self.tokens.append
+        toknum, tokval = token
+        if toknum in (NAME, NUMBER):
+            tokval += ' '
+        if toknum in (NEWLINE, NL):
+            startline = True
+        for tok in iterable:
+            toknum, tokval = tok[:2]
+
+            if toknum in (NAME, NUMBER, ASYNC, AWAIT):
+                tokval += ' '
+
+            if toknum == INDENT:
+                indents.append(tokval)
+                continue
+            elif toknum == DEDENT:
+                indents.pop()
+                continue
+            elif toknum in (NEWLINE, NL):
+                startline = True
+            elif startline and indents:
+                toks_append(indents[-1])
+                startline = False
+            toks_append(tokval)
+
+cookie_re = re.compile(r'^[ \t\f]*#.*?coding[:=][ \t]*([-\w.]+)', re.ASCII)
+blank_re = re.compile(br'^[ \t\f]*(?:[#\r\n]|$)', re.ASCII)
+
+def _get_normal_name(orig_enc):
+    """Imitates get_normal_name in tokenizer.c."""
+    # Only care about the first 12 characters.
+    enc = orig_enc[:12].lower().replace("_", "-")
+    if enc == "utf-8" or enc.startswith("utf-8-"):
+        return "utf-8"
+    if enc in ("latin-1", "iso-8859-1", "iso-latin-1") or \
+       enc.startswith(("latin-1-", "iso-8859-1-", "iso-latin-1-")):
+        return "iso-8859-1"
+    return orig_enc
+
+def detect_encoding(readline):
+    """
+    The detect_encoding() function is used to detect the encoding that should
+    be used to decode a Python source file. It requires one argument, readline,
+    in the same way as the tokenize() generator.
+
+    It will call readline a maximum of twice, and return the encoding used
+    (as a string) and a list of any lines (left as bytes) it has read
+    in.
+
+    It detects the encoding from the presence of a utf-8 bom or an encoding
+    cookie as specified in pep-0263. If both a bom and a cookie are present, but
+    disagree, a SyntaxError will be raised. If the encoding cookie is an invalid
+    charset, raise a SyntaxError.  Note that if a utf-8 bom is found,
+    'utf-8-sig' is returned.
+
+    If no encoding is specified, then the default of 'utf-8' will be returned.
+    """
+    bom_found = False
+    encoding = None
+    default = 'utf-8'
+    def read_or_stop():
+        try:
+            return readline()
+        except StopIteration:
+            return bytes()
+
+    def find_cookie(line):
+        try:
+            line_string = line.decode('ascii')
+        except UnicodeDecodeError:
+            return None
+        match = cookie_re.match(line_string)
+        if not match:
+            return None
+        encoding = _get_normal_name(match.group(1))
+        try:
+            codec = lookup(encoding)
+        except LookupError:
+            # This behaviour mimics the Python interpreter
+            raise SyntaxError("unknown encoding: " + encoding)
+
+        if bom_found:
+            if codec.name != 'utf-8':
+                # This behaviour mimics the Python interpreter
+                raise SyntaxError('encoding problem: utf-8')
+            encoding += '-sig'
+        return encoding
+
+    first = read_or_stop()
+    if first.startswith(BOM_UTF8):
+        bom_found = True
+        first = first[3:]
+        default = 'utf-8-sig'
+    if not first:
+        return default, []
+
+    encoding = find_cookie(first)
+    if encoding:
+        return encoding, [first]
+    if not blank_re.match(first):
+        return default, [first]
+
+    second = read_or_stop()
+    if not second:
+        return default, [first]
+
+    encoding = find_cookie(second)
+    if encoding:
+        return encoding, [first, second]
+
+    return default, [first, second]
+
+def untokenize(iterable):
+    """Transform tokens back into Python source code.
+
+    Each element returned by the iterable must be a token sequence
+    with at least two elements, a token number and token value.  If
+    only two tokens are passed, the resulting output is poor.
+
+    Round-trip invariant for full input:
+        Untokenized source will match input source exactly
+
+    Round-trip invariant for limited input:
+        # Output text will tokenize the back to the input
+        t1 = [tok[:2] for tok in generate_tokens(f.readline)]
+        newcode = untokenize(t1)
+        readline = iter(newcode.splitlines(1)).next
+        t2 = [tok[:2] for tokin generate_tokens(readline)]
+        assert t1 == t2
+    """
+    ut = Untokenizer()
+    return ut.untokenize(iterable)
+
+def generate_tokens(readline):
+    """
+    The generate_tokens() generator requires one argument, readline, which
+    must be a callable object which provides the same interface as the
+    readline() method of built-in file objects. Each call to the function
+    should return one line of input as a string.  Alternately, readline
+    can be a callable function terminating with StopIteration:
+        readline = open(myfile).next    # Example of alternate readline
+
+    The generator produces 5-tuples with these members: the token type; the
+    token string; a 2-tuple (srow, scol) of ints specifying the row and
+    column where the token begins in the source; a 2-tuple (erow, ecol) of
+    ints specifying the row and column where the token ends in the source;
+    and the line on which the token was found. The line passed is the
+    physical line.
+    """
+    lnum = parenlev = continued = 0
+    contstr, needcont = '', 0
+    contline = None
+    indents = [0]
+
+    # 'stashed' and 'async_*' are used for async/await parsing
+    stashed = None
+    async_def = False
+    async_def_indent = 0
+    async_def_nl = False
+
+    while 1:                                   # loop over lines in stream
+        try:
+            line = readline()
+        except StopIteration:
+            line = ''
+        lnum = lnum + 1
+        pos, max = 0, len(line)
+
+        if contstr:                            # continued string
+            if not line:
+                raise TokenError("EOF in multi-line string", strstart)
+            endmatch = endprog.match(line)
+            if endmatch:
+                pos = end = endmatch.end(0)
+                yield (STRING, contstr + line[:end],
+                       strstart, (lnum, end), contline + line)
+                contstr, needcont = '', 0
+                contline = None
+            elif needcont and line[-2:] != '\\\n' and line[-3:] != '\\\r\n':
+                yield (ERRORTOKEN, contstr + line,
+                           strstart, (lnum, len(line)), contline)
+                contstr = ''
+                contline = None
+                continue
+            else:
+                contstr = contstr + line
+                contline = contline + line
+                continue
+
+        elif parenlev == 0 and not continued:  # new statement
+            if not line: break
+            column = 0
+            while pos < max:                   # measure leading whitespace
+                if line[pos] == ' ': column = column + 1
+                elif line[pos] == '\t': column = (column//tabsize + 1)*tabsize
+                elif line[pos] == '\f': column = 0
+                else: break
+                pos = pos + 1
+            if pos == max: break
+
+            if stashed:
+                yield stashed
+                stashed = None
+
+            if line[pos] in '#\r\n':           # skip comments or blank lines
+                if line[pos] == '#':
+                    comment_token = line[pos:].rstrip('\r\n')
+                    nl_pos = pos + len(comment_token)
+                    yield (COMMENT, comment_token,
+                           (lnum, pos), (lnum, pos + len(comment_token)), line)
+                    yield (NL, line[nl_pos:],
+                           (lnum, nl_pos), (lnum, len(line)), line)
+                else:
+                    yield ((NL, COMMENT)[line[pos] == '#'], line[pos:],
+                           (lnum, pos), (lnum, len(line)), line)
+                continue
+
+            if column > indents[-1]:           # count indents or dedents
+                indents.append(column)
+                yield (INDENT, line[:pos], (lnum, 0), (lnum, pos), line)
+            while column < indents[-1]:
+                if column not in indents:
+                    raise IndentationError(
+                        "unindent does not match any outer indentation level",
+                        ("<tokenize>", lnum, pos, line))
+                indents = indents[:-1]
+
+                if async_def and async_def_indent >= indents[-1]:
+                    async_def = False
+                    async_def_nl = False
+                    async_def_indent = 0
+
+                yield (DEDENT, '', (lnum, pos), (lnum, pos), line)
+
+            if async_def and async_def_nl and async_def_indent >= indents[-1]:
+                async_def = False
+                async_def_nl = False
+                async_def_indent = 0
+
+        else:                                  # continued statement
+            if not line:
+                raise TokenError("EOF in multi-line statement", (lnum, 0))
+            continued = 0
+
+        while pos < max:
+            pseudomatch = pseudoprog.match(line, pos)
+            if pseudomatch:                                # scan for tokens
+                start, end = pseudomatch.span(1)
+                spos, epos, pos = (lnum, start), (lnum, end), end
+                token, initial = line[start:end], line[start]
+
+                if initial in string.digits or \
+                   (initial == '.' and token != '.'):      # ordinary number
+                    yield (NUMBER, token, spos, epos, line)
+                elif initial in '\r\n':
+                    newline = NEWLINE
+                    if parenlev > 0:
+                        newline = NL
+                    elif async_def:
+                        async_def_nl = True
+                    if stashed:
+                        yield stashed
+                        stashed = None
+                    yield (newline, token, spos, epos, line)
+
+                elif initial == '#':
+                    assert not token.endswith("\n")
+                    if stashed:
+                        yield stashed
+                        stashed = None
+                    yield (COMMENT, token, spos, epos, line)
+                elif token in triple_quoted:
+                    endprog = endprogs[token]
+                    endmatch = endprog.match(line, pos)
+                    if endmatch:                           # all on one line
+                        pos = endmatch.end(0)
+                        token = line[start:pos]
+                        if stashed:
+                            yield stashed
+                            stashed = None
+                        yield (STRING, token, spos, (lnum, pos), line)
+                    else:
+                        strstart = (lnum, start)           # multiple lines
+                        contstr = line[start:]
+                        contline = line
+                        break
+                elif initial in single_quoted or \
+                    token[:2] in single_quoted or \
+                    token[:3] in single_quoted:
+                    if token[-1] == '\n':                  # continued string
+                        strstart = (lnum, start)
+                        endprog = (endprogs[initial] or endprogs[token[1]] or
+                                   endprogs[token[2]])
+                        contstr, needcont = line[start:], 1
+                        contline = line
+                        break
+                    else:                                  # ordinary string
+                        if stashed:
+                            yield stashed
+                            stashed = None
+                        yield (STRING, token, spos, epos, line)
+                elif initial.isidentifier():               # ordinary name
+                    if token in ('async', 'await'):
+                        if async_def:
+                            yield (ASYNC if token == 'async' else AWAIT,
+                                   token, spos, epos, line)
+                            continue
+
+                    tok = (NAME, token, spos, epos, line)
+                    if token == 'async' and not stashed:
+                        stashed = tok
+                        continue
+
+                    if token == 'def':
+                        if (stashed
+                                and stashed[0] == NAME
+                                and stashed[1] == 'async'):
+
+                            async_def = True
+                            async_def_indent = indents[-1]
+
+                            yield (ASYNC, stashed[1],
+                                   stashed[2], stashed[3],
+                                   stashed[4])
+                            stashed = None
+
+                    if stashed:
+                        yield stashed
+                        stashed = None
+
+                    yield tok
+                elif initial == '\\':                      # continued stmt
+                    # This yield is new; needed for better idempotency:
+                    if stashed:
+                        yield stashed
+                        stashed = None
+                    yield (NL, token, spos, (lnum, pos), line)
+                    continued = 1
+                else:
+                    if initial in '([{': parenlev = parenlev + 1
+                    elif initial in ')]}': parenlev = parenlev - 1
+                    if stashed:
+                        yield stashed
+                        stashed = None
+                    yield (OP, token, spos, epos, line)
+            else:
+                yield (ERRORTOKEN, line[pos],
+                           (lnum, pos), (lnum, pos+1), line)
+                pos = pos + 1
+
+    if stashed:
+        yield stashed
+        stashed = None
+
+    for indent in indents[1:]:                 # pop remaining indent levels
+        yield (DEDENT, '', (lnum, 0), (lnum, 0), '')
+    yield (ENDMARKER, '', (lnum, 0), (lnum, 0), '')
+
+if __name__ == '__main__':                     # testing
+    import sys
+    if len(sys.argv) > 1: tokenize(open(sys.argv[1]).readline)
+    else: tokenize(sys.stdin.readline)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pygram.py b/rootfs/usr/lib/python3.8/lib2to3/pygram.py
new file mode 100644
index 0000000..24d9db9
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pygram.py
@@ -0,0 +1,43 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Export the Python grammar and symbols."""
+
+# Python imports
+import os
+
+# Local imports
+from .pgen2 import token
+from .pgen2 import driver
+from . import pytree
+
+# The grammar file
+_GRAMMAR_FILE = os.path.join(os.path.dirname(__file__), "Grammar.txt")
+_PATTERN_GRAMMAR_FILE = os.path.join(os.path.dirname(__file__),
+                                     "PatternGrammar.txt")
+
+
+class Symbols(object):
+
+    def __init__(self, grammar):
+        """Initializer.
+
+        Creates an attribute for each grammar symbol (nonterminal),
+        whose value is the symbol's type (an int >= 256).
+        """
+        for name, symbol in grammar.symbol2number.items():
+            setattr(self, name, symbol)
+
+
+python_grammar = driver.load_packaged_grammar("lib2to3", _GRAMMAR_FILE)
+
+python_symbols = Symbols(python_grammar)
+
+python_grammar_no_print_statement = python_grammar.copy()
+del python_grammar_no_print_statement.keywords["print"]
+
+python_grammar_no_print_and_exec_statement = python_grammar_no_print_statement.copy()
+del python_grammar_no_print_and_exec_statement.keywords["exec"]
+
+pattern_grammar = driver.load_packaged_grammar("lib2to3", _PATTERN_GRAMMAR_FILE)
+pattern_symbols = Symbols(pattern_grammar)
diff --git a/rootfs/usr/lib/python3.8/lib2to3/pytree.py b/rootfs/usr/lib/python3.8/lib2to3/pytree.py
new file mode 100644
index 0000000..2a6ef2e
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/pytree.py
@@ -0,0 +1,853 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""
+Python parse tree definitions.
+
+This is a very concrete parse tree; we need to keep every token and
+even the comments and whitespace between tokens.
+
+There's also a pattern matching implementation here.
+"""
+
+__author__ = "Guido van Rossum <guido@python.org>"
+
+import sys
+from io import StringIO
+
+HUGE = 0x7FFFFFFF  # maximum repeat count, default max
+
+_type_reprs = {}
+def type_repr(type_num):
+    global _type_reprs
+    if not _type_reprs:
+        from .pygram import python_symbols
+        # printing tokens is possible but not as useful
+        # from .pgen2 import token // token.__dict__.items():
+        for name, val in python_symbols.__dict__.items():
+            if type(val) == int: _type_reprs[val] = name
+    return _type_reprs.setdefault(type_num, type_num)
+
+class Base(object):
+
+    """
+    Abstract base class for Node and Leaf.
+
+    This provides some default functionality and boilerplate using the
+    template pattern.
+
+    A node may be a subnode of at most one parent.
+    """
+
+    # Default values for instance variables
+    type = None    # int: token number (< 256) or symbol number (>= 256)
+    parent = None  # Parent node pointer, or None
+    children = ()  # Tuple of subnodes
+    was_changed = False
+    was_checked = False
+
+    def __new__(cls, *args, **kwds):
+        """Constructor that prevents Base from being instantiated."""
+        assert cls is not Base, "Cannot instantiate Base"
+        return object.__new__(cls)
+
+    def __eq__(self, other):
+        """
+        Compare two nodes for equality.
+
+        This calls the method _eq().
+        """
+        if self.__class__ is not other.__class__:
+            return NotImplemented
+        return self._eq(other)
+
+    __hash__ = None # For Py3 compatibility.
+
+    def _eq(self, other):
+        """
+        Compare two nodes for equality.
+
+        This is called by __eq__ and __ne__.  It is only called if the two nodes
+        have the same type.  This must be implemented by the concrete subclass.
+        Nodes should be considered equal if they have the same structure,
+        ignoring the prefix string and other context information.
+        """
+        raise NotImplementedError
+
+    def clone(self):
+        """
+        Return a cloned (deep) copy of self.
+
+        This must be implemented by the concrete subclass.
+        """
+        raise NotImplementedError
+
+    def post_order(self):
+        """
+        Return a post-order iterator for the tree.
+
+        This must be implemented by the concrete subclass.
+        """
+        raise NotImplementedError
+
+    def pre_order(self):
+        """
+        Return a pre-order iterator for the tree.
+
+        This must be implemented by the concrete subclass.
+        """
+        raise NotImplementedError
+
+    def replace(self, new):
+        """Replace this node with a new one in the parent."""
+        assert self.parent is not None, str(self)
+        assert new is not None
+        if not isinstance(new, list):
+            new = [new]
+        l_children = []
+        found = False
+        for ch in self.parent.children:
+            if ch is self:
+                assert not found, (self.parent.children, self, new)
+                if new is not None:
+                    l_children.extend(new)
+                found = True
+            else:
+                l_children.append(ch)
+        assert found, (self.children, self, new)
+        self.parent.changed()
+        self.parent.children = l_children
+        for x in new:
+            x.parent = self.parent
+        self.parent = None
+
+    def get_lineno(self):
+        """Return the line number which generated the invocant node."""
+        node = self
+        while not isinstance(node, Leaf):
+            if not node.children:
+                return
+            node = node.children[0]
+        return node.lineno
+
+    def changed(self):
+        if self.parent:
+            self.parent.changed()
+        self.was_changed = True
+
+    def remove(self):
+        """
+        Remove the node from the tree. Returns the position of the node in its
+        parent's children before it was removed.
+        """
+        if self.parent:
+            for i, node in enumerate(self.parent.children):
+                if node is self:
+                    self.parent.changed()
+                    del self.parent.children[i]
+                    self.parent = None
+                    return i
+
+    @property
+    def next_sibling(self):
+        """
+        The node immediately following the invocant in their parent's children
+        list. If the invocant does not have a next sibling, it is None
+        """
+        if self.parent is None:
+            return None
+
+        # Can't use index(); we need to test by identity
+        for i, child in enumerate(self.parent.children):
+            if child is self:
+                try:
+                    return self.parent.children[i+1]
+                except IndexError:
+                    return None
+
+    @property
+    def prev_sibling(self):
+        """
+        The node immediately preceding the invocant in their parent's children
+        list. If the invocant does not have a previous sibling, it is None.
+        """
+        if self.parent is None:
+            return None
+
+        # Can't use index(); we need to test by identity
+        for i, child in enumerate(self.parent.children):
+            if child is self:
+                if i == 0:
+                    return None
+                return self.parent.children[i-1]
+
+    def leaves(self):
+        for child in self.children:
+            yield from child.leaves()
+
+    def depth(self):
+        if self.parent is None:
+            return 0
+        return 1 + self.parent.depth()
+
+    def get_suffix(self):
+        """
+        Return the string immediately following the invocant node. This is
+        effectively equivalent to node.next_sibling.prefix
+        """
+        next_sib = self.next_sibling
+        if next_sib is None:
+            return ""
+        return next_sib.prefix
+
+    if sys.version_info < (3, 0):
+        def __str__(self):
+            return str(self).encode("ascii")
+
+class Node(Base):
+
+    """Concrete implementation for interior nodes."""
+
+    def __init__(self,type, children,
+                 context=None,
+                 prefix=None,
+                 fixers_applied=None):
+        """
+        Initializer.
+
+        Takes a type constant (a symbol number >= 256), a sequence of
+        child nodes, and an optional context keyword argument.
+
+        As a side effect, the parent pointers of the children are updated.
+        """
+        assert type >= 256, type
+        self.type = type
+        self.children = list(children)
+        for ch in self.children:
+            assert ch.parent is None, repr(ch)
+            ch.parent = self
+        if prefix is not None:
+            self.prefix = prefix
+        if fixers_applied:
+            self.fixers_applied = fixers_applied[:]
+        else:
+            self.fixers_applied = None
+
+    def __repr__(self):
+        """Return a canonical string representation."""
+        return "%s(%s, %r)" % (self.__class__.__name__,
+                               type_repr(self.type),
+                               self.children)
+
+    def __unicode__(self):
+        """
+        Return a pretty string representation.
+
+        This reproduces the input source exactly.
+        """
+        return "".join(map(str, self.children))
+
+    if sys.version_info > (3, 0):
+        __str__ = __unicode__
+
+    def _eq(self, other):
+        """Compare two nodes for equality."""
+        return (self.type, self.children) == (other.type, other.children)
+
+    def clone(self):
+        """Return a cloned (deep) copy of self."""
+        return Node(self.type, [ch.clone() for ch in self.children],
+                    fixers_applied=self.fixers_applied)
+
+    def post_order(self):
+        """Return a post-order iterator for the tree."""
+        for child in self.children:
+            yield from child.post_order()
+        yield self
+
+    def pre_order(self):
+        """Return a pre-order iterator for the tree."""
+        yield self
+        for child in self.children:
+            yield from child.pre_order()
+
+    @property
+    def prefix(self):
+        """
+        The whitespace and comments preceding this node in the input.
+        """
+        if not self.children:
+            return ""
+        return self.children[0].prefix
+
+    @prefix.setter
+    def prefix(self, prefix):
+        if self.children:
+            self.children[0].prefix = prefix
+
+    def set_child(self, i, child):
+        """
+        Equivalent to 'node.children[i] = child'. This method also sets the
+        child's parent attribute appropriately.
+        """
+        child.parent = self
+        self.children[i].parent = None
+        self.children[i] = child
+        self.changed()
+
+    def insert_child(self, i, child):
+        """
+        Equivalent to 'node.children.insert(i, child)'. This method also sets
+        the child's parent attribute appropriately.
+        """
+        child.parent = self
+        self.children.insert(i, child)
+        self.changed()
+
+    def append_child(self, child):
+        """
+        Equivalent to 'node.children.append(child)'. This method also sets the
+        child's parent attribute appropriately.
+        """
+        child.parent = self
+        self.children.append(child)
+        self.changed()
+
+
+class Leaf(Base):
+
+    """Concrete implementation for leaf nodes."""
+
+    # Default values for instance variables
+    _prefix = ""  # Whitespace and comments preceding this token in the input
+    lineno = 0    # Line where this token starts in the input
+    column = 0    # Column where this token tarts in the input
+
+    def __init__(self, type, value,
+                 context=None,
+                 prefix=None,
+                 fixers_applied=[]):
+        """
+        Initializer.
+
+        Takes a type constant (a token number < 256), a string value, and an
+        optional context keyword argument.
+        """
+        assert 0 <= type < 256, type
+        if context is not None:
+            self._prefix, (self.lineno, self.column) = context
+        self.type = type
+        self.value = value
+        if prefix is not None:
+            self._prefix = prefix
+        self.fixers_applied = fixers_applied[:]
+
+    def __repr__(self):
+        """Return a canonical string representation."""
+        return "%s(%r, %r)" % (self.__class__.__name__,
+                               self.type,
+                               self.value)
+
+    def __unicode__(self):
+        """
+        Return a pretty string representation.
+
+        This reproduces the input source exactly.
+        """
+        return self.prefix + str(self.value)
+
+    if sys.version_info > (3, 0):
+        __str__ = __unicode__
+
+    def _eq(self, other):
+        """Compare two nodes for equality."""
+        return (self.type, self.value) == (other.type, other.value)
+
+    def clone(self):
+        """Return a cloned (deep) copy of self."""
+        return Leaf(self.type, self.value,
+                    (self.prefix, (self.lineno, self.column)),
+                    fixers_applied=self.fixers_applied)
+
+    def leaves(self):
+        yield self
+
+    def post_order(self):
+        """Return a post-order iterator for the tree."""
+        yield self
+
+    def pre_order(self):
+        """Return a pre-order iterator for the tree."""
+        yield self
+
+    @property
+    def prefix(self):
+        """
+        The whitespace and comments preceding this token in the input.
+        """
+        return self._prefix
+
+    @prefix.setter
+    def prefix(self, prefix):
+        self.changed()
+        self._prefix = prefix
+
+def convert(gr, raw_node):
+    """
+    Convert raw node information to a Node or Leaf instance.
+
+    This is passed to the parser driver which calls it whenever a reduction of a
+    grammar rule produces a new complete node, so that the tree is build
+    strictly bottom-up.
+    """
+    type, value, context, children = raw_node
+    if children or type in gr.number2symbol:
+        # If there's exactly one child, return that child instead of
+        # creating a new node.
+        if len(children) == 1:
+            return children[0]
+        return Node(type, children, context=context)
+    else:
+        return Leaf(type, value, context=context)
+
+
+class BasePattern(object):
+
+    """
+    A pattern is a tree matching pattern.
+
+    It looks for a specific node type (token or symbol), and
+    optionally for a specific content.
+
+    This is an abstract base class.  There are three concrete
+    subclasses:
+
+    - LeafPattern matches a single leaf node;
+    - NodePattern matches a single node (usually non-leaf);
+    - WildcardPattern matches a sequence of nodes of variable length.
+    """
+
+    # Defaults for instance variables
+    type = None     # Node type (token if < 256, symbol if >= 256)
+    content = None  # Optional content matching pattern
+    name = None     # Optional name used to store match in results dict
+
+    def __new__(cls, *args, **kwds):
+        """Constructor that prevents BasePattern from being instantiated."""
+        assert cls is not BasePattern, "Cannot instantiate BasePattern"
+        return object.__new__(cls)
+
+    def __repr__(self):
+        args = [type_repr(self.type), self.content, self.name]
+        while args and args[-1] is None:
+            del args[-1]
+        return "%s(%s)" % (self.__class__.__name__, ", ".join(map(repr, args)))
+
+    def optimize(self):
+        """
+        A subclass can define this as a hook for optimizations.
+
+        Returns either self or another node with the same effect.
+        """
+        return self
+
+    def match(self, node, results=None):
+        """
+        Does this pattern exactly match a node?
+
+        Returns True if it matches, False if not.
+
+        If results is not None, it must be a dict which will be
+        updated with the nodes matching named subpatterns.
+
+        Default implementation for non-wildcard patterns.
+        """
+        if self.type is not None and node.type != self.type:
+            return False
+        if self.content is not None:
+            r = None
+            if results is not None:
+                r = {}
+            if not self._submatch(node, r):
+                return False
+            if r:
+                results.update(r)
+        if results is not None and self.name:
+            results[self.name] = node
+        return True
+
+    def match_seq(self, nodes, results=None):
+        """
+        Does this pattern exactly match a sequence of nodes?
+
+        Default implementation for non-wildcard patterns.
+        """
+        if len(nodes) != 1:
+            return False
+        return self.match(nodes[0], results)
+
+    def generate_matches(self, nodes):
+        """
+        Generator yielding all matches for this pattern.
+
+        Default implementation for non-wildcard patterns.
+        """
+        r = {}
+        if nodes and self.match(nodes[0], r):
+            yield 1, r
+
+
+class LeafPattern(BasePattern):
+
+    def __init__(self, type=None, content=None, name=None):
+        """
+        Initializer.  Takes optional type, content, and name.
+
+        The type, if given must be a token type (< 256).  If not given,
+        this matches any *leaf* node; the content may still be required.
+
+        The content, if given, must be a string.
+
+        If a name is given, the matching node is stored in the results
+        dict under that key.
+        """
+        if type is not None:
+            assert 0 <= type < 256, type
+        if content is not None:
+            assert isinstance(content, str), repr(content)
+        self.type = type
+        self.content = content
+        self.name = name
+
+    def match(self, node, results=None):
+        """Override match() to insist on a leaf node."""
+        if not isinstance(node, Leaf):
+            return False
+        return BasePattern.match(self, node, results)
+
+    def _submatch(self, node, results=None):
+        """
+        Match the pattern's content to the node's children.
+
+        This assumes the node type matches and self.content is not None.
+
+        Returns True if it matches, False if not.
+
+        If results is not None, it must be a dict which will be
+        updated with the nodes matching named subpatterns.
+
+        When returning False, the results dict may still be updated.
+        """
+        return self.content == node.value
+
+
+class NodePattern(BasePattern):
+
+    wildcards = False
+
+    def __init__(self, type=None, content=None, name=None):
+        """
+        Initializer.  Takes optional type, content, and name.
+
+        The type, if given, must be a symbol type (>= 256).  If the
+        type is None this matches *any* single node (leaf or not),
+        except if content is not None, in which it only matches
+        non-leaf nodes that also match the content pattern.
+
+        The content, if not None, must be a sequence of Patterns that
+        must match the node's children exactly.  If the content is
+        given, the type must not be None.
+
+        If a name is given, the matching node is stored in the results
+        dict under that key.
+        """
+        if type is not None:
+            assert type >= 256, type
+        if content is not None:
+            assert not isinstance(content, str), repr(content)
+            content = list(content)
+            for i, item in enumerate(content):
+                assert isinstance(item, BasePattern), (i, item)
+                if isinstance(item, WildcardPattern):
+                    self.wildcards = True
+        self.type = type
+        self.content = content
+        self.name = name
+
+    def _submatch(self, node, results=None):
+        """
+        Match the pattern's content to the node's children.
+
+        This assumes the node type matches and self.content is not None.
+
+        Returns True if it matches, False if not.
+
+        If results is not None, it must be a dict which will be
+        updated with the nodes matching named subpatterns.
+
+        When returning False, the results dict may still be updated.
+        """
+        if self.wildcards:
+            for c, r in generate_matches(self.content, node.children):
+                if c == len(node.children):
+                    if results is not None:
+                        results.update(r)
+                    return True
+            return False
+        if len(self.content) != len(node.children):
+            return False
+        for subpattern, child in zip(self.content, node.children):
+            if not subpattern.match(child, results):
+                return False
+        return True
+
+
+class WildcardPattern(BasePattern):
+
+    """
+    A wildcard pattern can match zero or more nodes.
+
+    This has all the flexibility needed to implement patterns like:
+
+    .*      .+      .?      .{m,n}
+    (a b c | d e | f)
+    (...)*  (...)+  (...)?  (...){m,n}
+
+    except it always uses non-greedy matching.
+    """
+
+    def __init__(self, content=None, min=0, max=HUGE, name=None):
+        """
+        Initializer.
+
+        Args:
+            content: optional sequence of subsequences of patterns;
+                     if absent, matches one node;
+                     if present, each subsequence is an alternative [*]
+            min: optional minimum number of times to match, default 0
+            max: optional maximum number of times to match, default HUGE
+            name: optional name assigned to this match
+
+        [*] Thus, if content is [[a, b, c], [d, e], [f, g, h]] this is
+            equivalent to (a b c | d e | f g h); if content is None,
+            this is equivalent to '.' in regular expression terms.
+            The min and max parameters work as follows:
+                min=0, max=maxint: .*
+                min=1, max=maxint: .+
+                min=0, max=1: .?
+                min=1, max=1: .
+            If content is not None, replace the dot with the parenthesized
+            list of alternatives, e.g. (a b c | d e | f g h)*
+        """
+        assert 0 <= min <= max <= HUGE, (min, max)
+        if content is not None:
+            content = tuple(map(tuple, content))  # Protect against alterations
+            # Check sanity of alternatives
+            assert len(content), repr(content)  # Can't have zero alternatives
+            for alt in content:
+                assert len(alt), repr(alt) # Can have empty alternatives
+        self.content = content
+        self.min = min
+        self.max = max
+        self.name = name
+
+    def optimize(self):
+        """Optimize certain stacked wildcard patterns."""
+        subpattern = None
+        if (self.content is not None and
+            len(self.content) == 1 and len(self.content[0]) == 1):
+            subpattern = self.content[0][0]
+        if self.min == 1 and self.max == 1:
+            if self.content is None:
+                return NodePattern(name=self.name)
+            if subpattern is not None and  self.name == subpattern.name:
+                return subpattern.optimize()
+        if (self.min <= 1 and isinstance(subpattern, WildcardPattern) and
+            subpattern.min <= 1 and self.name == subpattern.name):
+            return WildcardPattern(subpattern.content,
+                                   self.min*subpattern.min,
+                                   self.max*subpattern.max,
+                                   subpattern.name)
+        return self
+
+    def match(self, node, results=None):
+        """Does this pattern exactly match a node?"""
+        return self.match_seq([node], results)
+
+    def match_seq(self, nodes, results=None):
+        """Does this pattern exactly match a sequence of nodes?"""
+        for c, r in self.generate_matches(nodes):
+            if c == len(nodes):
+                if results is not None:
+                    results.update(r)
+                    if self.name:
+                        results[self.name] = list(nodes)
+                return True
+        return False
+
+    def generate_matches(self, nodes):
+        """
+        Generator yielding matches for a sequence of nodes.
+
+        Args:
+            nodes: sequence of nodes
+
+        Yields:
+            (count, results) tuples where:
+            count: the match comprises nodes[:count];
+            results: dict containing named submatches.
+        """
+        if self.content is None:
+            # Shortcut for special case (see __init__.__doc__)
+            for count in range(self.min, 1 + min(len(nodes), self.max)):
+                r = {}
+                if self.name:
+                    r[self.name] = nodes[:count]
+                yield count, r
+        elif self.name == "bare_name":
+            yield self._bare_name_matches(nodes)
+        else:
+            # The reason for this is that hitting the recursion limit usually
+            # results in some ugly messages about how RuntimeErrors are being
+            # ignored. We only have to do this on CPython, though, because other
+            # implementations don't have this nasty bug in the first place.
+            if hasattr(sys, "getrefcount"):
+                save_stderr = sys.stderr
+                sys.stderr = StringIO()
+            try:
+                for count, r in self._recursive_matches(nodes, 0):
+                    if self.name:
+                        r[self.name] = nodes[:count]
+                    yield count, r
+            except RuntimeError:
+                # We fall back to the iterative pattern matching scheme if the recursive
+                # scheme hits the recursion limit.
+                for count, r in self._iterative_matches(nodes):
+                    if self.name:
+                        r[self.name] = nodes[:count]
+                    yield count, r
+            finally:
+                if hasattr(sys, "getrefcount"):
+                    sys.stderr = save_stderr
+
+    def _iterative_matches(self, nodes):
+        """Helper to iteratively yield the matches."""
+        nodelen = len(nodes)
+        if 0 >= self.min:
+            yield 0, {}
+
+        results = []
+        # generate matches that use just one alt from self.content
+        for alt in self.content:
+            for c, r in generate_matches(alt, nodes):
+                yield c, r
+                results.append((c, r))
+
+        # for each match, iterate down the nodes
+        while results:
+            new_results = []
+            for c0, r0 in results:
+                # stop if the entire set of nodes has been matched
+                if c0 < nodelen and c0 <= self.max:
+                    for alt in self.content:
+                        for c1, r1 in generate_matches(alt, nodes[c0:]):
+                            if c1 > 0:
+                                r = {}
+                                r.update(r0)
+                                r.update(r1)
+                                yield c0 + c1, r
+                                new_results.append((c0 + c1, r))
+            results = new_results
+
+    def _bare_name_matches(self, nodes):
+        """Special optimized matcher for bare_name."""
+        count = 0
+        r = {}
+        done = False
+        max = len(nodes)
+        while not done and count < max:
+            done = True
+            for leaf in self.content:
+                if leaf[0].match(nodes[count], r):
+                    count += 1
+                    done = False
+                    break
+        r[self.name] = nodes[:count]
+        return count, r
+
+    def _recursive_matches(self, nodes, count):
+        """Helper to recursively yield the matches."""
+        assert self.content is not None
+        if count >= self.min:
+            yield 0, {}
+        if count < self.max:
+            for alt in self.content:
+                for c0, r0 in generate_matches(alt, nodes):
+                    for c1, r1 in self._recursive_matches(nodes[c0:], count+1):
+                        r = {}
+                        r.update(r0)
+                        r.update(r1)
+                        yield c0 + c1, r
+
+
+class NegatedPattern(BasePattern):
+
+    def __init__(self, content=None):
+        """
+        Initializer.
+
+        The argument is either a pattern or None.  If it is None, this
+        only matches an empty sequence (effectively '$' in regex
+        lingo).  If it is not None, this matches whenever the argument
+        pattern doesn't have any matches.
+        """
+        if content is not None:
+            assert isinstance(content, BasePattern), repr(content)
+        self.content = content
+
+    def match(self, node):
+        # We never match a node in its entirety
+        return False
+
+    def match_seq(self, nodes):
+        # We only match an empty sequence of nodes in its entirety
+        return len(nodes) == 0
+
+    def generate_matches(self, nodes):
+        if self.content is None:
+            # Return a match if there is an empty sequence
+            if len(nodes) == 0:
+                yield 0, {}
+        else:
+            # Return a match if the argument pattern has no matches
+            for c, r in self.content.generate_matches(nodes):
+                return
+            yield 0, {}
+
+
+def generate_matches(patterns, nodes):
+    """
+    Generator yielding matches for a sequence of patterns and nodes.
+
+    Args:
+        patterns: a sequence of patterns
+        nodes: a sequence of nodes
+
+    Yields:
+        (count, results) tuples where:
+        count: the entire sequence of patterns matches nodes[:count];
+        results: dict containing named submatches.
+        """
+    if not patterns:
+        yield 0, {}
+    else:
+        p, rest = patterns[0], patterns[1:]
+        for c0, r0 in p.generate_matches(nodes):
+            if not rest:
+                yield c0, r0
+            else:
+                for c1, r1 in generate_matches(rest, nodes[c0:]):
+                    r = {}
+                    r.update(r0)
+                    r.update(r1)
+                    yield c0 + c1, r
diff --git a/rootfs/usr/lib/python3.8/lib2to3/refactor.py b/rootfs/usr/lib/python3.8/lib2to3/refactor.py
new file mode 100644
index 0000000..55fd60f
--- /dev/null
+++ b/rootfs/usr/lib/python3.8/lib2to3/refactor.py
@@ -0,0 +1,728 @@
+# Copyright 2006 Google, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Refactoring framework.
+
+Used as a main program, this can refactor any number of files and/or
+recursively descend down directories.  Imported as a module, this
+provides infrastructure to write your own refactoring tool.
+"""
+
+__author__ = "Guido van Rossum <guido@python.org>"
+
+
+# Python imports
+import io
+import os
+import pkgutil
+import sys
+import logging
+import operator
+import collections
+from itertools import chain
+
+# Local imports
+from .pgen2 import driver, tokenize, token
+from .fixer_util import find_root
+from . import pytree, pygram
+from . import btm_matcher as bm
+
+
+def get_all_fix_names(fixer_pkg, remove_prefix=True):
+    """Return a sorted list of all available fix names in the given package."""
+    pkg = __import__(fixer_pkg, [], [], ["*"])
+    fix_names = []
+    for finder, name, ispkg in pkgutil.iter_modules(pkg.__path__):
+        if name.startswith("fix_"):
+            if remove_prefix:
+                name = name[4:]
+            fix_names.append(name)
+    return fix_names
+
+
+class _EveryNode(Exception):
+    pass
+
+
+def _get_head_types(pat):
+    """ Accepts a pytree Pattern Node and returns a set
+        of the pattern types which will match first. """
+
+    if isinstance(pat, (pytree.NodePattern, pytree.LeafPattern)):
+        # NodePatters must either have no type and no content
+        #   or a type and content -- so they don't get any farther
+        # Always return leafs
+        if pat.type is None:
+            raise _EveryNode
+        return {pat.type}
+
+    if isinstance(pat, pytree.NegatedPattern):
+        if pat.content:
+            return _get_head_types(pat.content)
+        raise _EveryNode # Negated Patterns don't have a type
+
+    if isinstance(pat, pytree.WildcardPattern):
+        # Recurse on each node in content
+        r = set()
+        for p in pat.content:
+            for x in p:
+                r.update(_get_head_types(x))
+        return r
+
+    raise Exception("Oh no! I don't understand pattern %s" %(pat))
+
+
+def _get_headnode_dict(fixer_list):
+    """ Accepts a list of fixers and returns a dictionary
+        of head node type --> fixer list.  """
+    head_nodes = collections.defaultdict(list)
+    every = []
+    for fixer in fixer_list:
+        if fixer.pattern:
+            try:
+                heads = _get_head_types(fixer.pattern)
+            except _EveryNode:
+                every.append(fixer)
+            else:
+                for node_type in heads:
+                    head_nodes[node_type].append(fixer)
+        else:
+            if fixer._accept_type is not None:
+                head_nodes[fixer._accept_type].append(fixer)
+            else:
+                every.append(fixer)
+    for node_type in chain(pygram.python_grammar.symbol2number.values(),
+                           pygram.python_grammar.tokens):
+        head_nodes[node_type].extend(every)
+    return dict(head_nodes)
+
+
+def get_fixers_from_package(pkg_name):
+    """
+    Return the fully qualified names for fixers in the package pkg_name.
+    """
+    return [pkg_name + "." + fix_name
+            for fix_name in get_all_fix_names(pkg_name, False)]
+
+def _identity(obj):
+    return obj
+
+
+def _detect_future_features(source):
+    have_docstring = False
+    gen = tokenize.generate_tokens(io.StringIO(source).readline)
+    def advance():
+        tok = next(gen)
+        return tok[0], tok[1]
+    ignore = frozenset({token.NEWLINE, tokenize.NL, token.COMMENT})
+    features = set()
+    try:
+        while True:
+            tp, value = advance()
+            if tp in ignore:
+                continue
+            elif tp == token.STRING:
+                if have_docstring:
+                    break
+                have_docstring = True
+            elif tp == token.NAME and value == "from":
+                tp, value = advance()
+                if tp != token.NAME or value != "__future__":
+                    break
+                tp, value = advance()
+                if tp != token.NAME or value != "import":
+                    break
+                tp, value = advance()
+                if tp == token.OP and value == "(":
+                    tp, value = advance()
+                while tp == token.NAME:
+                    features.add(value)
+                    tp, value = advance()
+                    if tp != token.OP or value != ",":
+                        break
+                    tp, value = advance()
+            else:
+                break
+    except StopIteration:
+        pass
+    return frozenset(features)
+
+
+class FixerError(Exception):
+    """A fixer could not be loaded."""
+
+
+class RefactoringTool(object):
+
+    _default_options = {"print_function" : False,
+                        "write_unchanged_files" : False}
+
+    CLASS_PREFIX = "Fix" # The prefix for fixer classes
+    FILE_PREFIX = "fix_" # The prefix for modules with a fixer within
+
+    def __init__(self, fixer_names, options=None, explicit=None):
+        """Initializer.
+
+        Args:
+            fixer_names: a list of fixers to import
+            options: a dict with configuration.
+            explicit: a list of fixers to run even if they are explicit.
+        """
+        self.fixers = fixer_names
+        self.explicit = explicit or []
+        self.options = self._default_options.copy()
+        if options is not None:
+            self.options.update(options)
+        if self.options["print_function"]:
+            self.grammar = pygram.python_grammar_no_print_statement
+        else:
+            self.grammar = pygram.python_grammar
+        # When this is True, the refactor*() methods will call write_file() for
+        # files processed even if they were not changed during refactoring. If
+        # and only if the refactor method's write parameter was True.
+        self.write_unchanged_files = self.options.get("write_unchanged_files")
+        self.errors = []
+        self.logger = logging.getLogger("RefactoringTool")
+        self.fixer_log = []
+        self.wrote = False
+        self.driver = driver.Driver(self.grammar,
+                                    convert=pytree.convert,
+                                    logger=self.logger)
+        self.pre_order, self.post_order = self.get_fixers()
+
+
+        self.files = []  # List of files that were or should be modified
+
+        self.BM = bm.BottomMatcher()
+        self.bmi_pre_order = [] # Bottom Matcher incompatible fixers
+        self.bmi_post_order = []
+
+        for fixer in chain(self.post_order, self.pre_order):
+            if fixer.BM_compatible:
+                self.BM.add_fixer(fixer)
+                # remove fixers that will be handled by the bottom-up
+                # matcher
+            elif fixer in self.pre_order:
+                self.bmi_pre_order.append(fixer)
+            elif fixer in self.post_order:
+                self.bmi_post_order.append(fixer)
+
+        self.bmi_pre_order_heads = _get_headnode_dict(self.bmi_pre_order)
+        self.bmi_post_order_heads = _get_headnode_dict(self.bmi_post_order)
+
+
+
+    def get_fixers(self):
+        """Inspects the options to load the requested patterns and handlers.
+
+        Returns:
+          (pre_order, post_order), where pre_order is the list of fixers that
+          want a pre-order AST traversal, and post_order is the list that want
+          post-order traversal.
+        """
+        pre_order_fixers = []
+        post_order_fixers = []
+        for fix_mod_path in self.fixers:
+            mod = __import__(fix_mod_path, {}, {}, ["*"])
+            fix_name = fix_mod_path.rsplit(".", 1)[-1]
+            if fix_name.startswith(self.FILE_PREFIX):
+                fix_name = fix_name[len(self.FILE_PREFIX):]
+            parts = fix_name.split("_")
+            class_name = self.CLASS_PREFIX + "".join([p.title() for p in parts])
+            try:
+                fix_class = getattr(mod, class_name)
+            except AttributeError:
+                raise FixerError("Can't find %s.%s" % (fix_name, class_name)) from None
+            fixer = fix_class(self.options, self.fixer_log)
+            if fixer.explicit and self.explicit is not True and \
+                    fix_mod_path not in self.explicit:
+                self.log_message("Skipping optional fixer: %s", fix_name)
+                continue
+
+            self.log_debug("Adding transformation: %s", fix_name)
+            if fixer.order == "pre":
+                pre_order_fixers.append(fixer)
+            elif fixer.order == "post":
+                post_order_fixers.append(fixer)
+            else:
+                raise FixerError("Illegal fixer order: %r" % fixer.order)
+
+        key_func = operator.attrgetter("run_order")
+        pre_order_fixers.sort(key=key_func)
+        post_order_fixers.sort(key=key_func)
+        return (pre_order_fixers, post_order_fixers)
+
+    def log_error(self, msg, *args, **kwds):
+        """Called when an error occurs."""
+        raise
+
+    def log_message(self, msg, *args):
+        """Hook to log a message."""
+        if args:
+            msg = msg % args
+        self.logger.info(msg)
+
+    def log_debug(self, msg, *args):
+        if args:
+            msg = msg % args
+        self.logger.debug(msg)
+
+    def print_output(self, old_text, new_text, filename, equal):
+        """Called with the old version, new version, and filename of a
+        refactored file."""
+        pass
+
+    def refactor(self, items, write=False, doctests_only=False):
+        """Refactor a list of files and directories."""
+
+        for dir_or_file in items:
+            if os.path.isdir(dir_or_file):
+                self.refactor_dir(dir_or_file, write, doctests_only)
+            else:
+                self.refactor_file(dir_or_file, write, doctests_only)
+
+    def refactor_dir(self, dir_name, write=False, doctests_only=False):
+        """Descends down a directory and refactor every Python file found.
+
+        Python files are assumed to have a .py extension.
+
+        Files and subdirectories starting with '.' are skipped.
+        """
+        py_ext = os.extsep + "py"
+        for dirpath, dirnames, filenames in os.walk(dir_name):
+            self.log_debug("Descending into %s", dirpath)
+            dirnames.sort()
+            filenames.sort()
+            for name in filenames:
+                if (not name.startswith(".") and
+                    os.path.splitext(name)[1] == py_ext):
+                    fullname = os.path.join(dirpath, name)
+                    self.refactor_file(fullname, write, doctests_only)
+            # Modify dirnames in-place to remove subdirs with leading dots
+            dirnames[:] = [dn for dn in dirnames if not dn.startswith(".")]
+
+    def _read_python_source(self, filename):
+        """
+        Do our best to decode a Python source file correctly.
+        """
+        try:
+            f = open(filename, "rb")
+        except OSError as err:
+            self.log_error("Can't open %s: %s", filename, err)
+            return None, None
+        try:
+            encoding = tokenize.detect_encoding(f.readline)[0]
+        finally:
+            f.close()
+        with io.open(filename, "r", encoding=encoding, newline='') as f:
+            return f.read(), encoding
+
+    def refactor_file(self, filename, write=False, doctests_only=False):
+        """Refactors a file."""
+        input, encoding = self._read_python_source(filename)
+        if input is None:
+            # Reading the file failed.
+            return
+        input += "\n" # Silence certain parse errors
+        if doctests_only:
+            self.log_debug("Refactoring doctests in %s", filename)
+            output = self.refactor_docstring(input, filename)
+            if self.write_unchanged_files or output != input:
+                self.processed_file(output, filename, input, write, encoding)
+            else:
+                self.log_debug("No doctest changes in %s", filename)
+        else:
+            tree = self.refactor_string(input, filename)
+            if self.write_unchanged_files or (tree and tree.was_changed):
+                # The [:-1] is to take off the \n we added earlier
+                self.processed_file(str(tree)[:-1], filename,
+                                    write=write, encoding=encoding)
+            else:
+                self.log_debug("No changes in %s", filename)
+
+    def refactor_string(self, data, name):
+        """Refactor a given input string.
+
+        Args:
+            data: a string holding the code to be refactored.
+            name: a human-readable name for use in error/log messages.
+
+        Returns:
+            An AST corresponding to the refactored input stream; None if
+            there were errors during the parse.
+        """
+        features = _detect_future_features(data)
+        if "print_function" in features:
+            self.driver.grammar = pygram.python_grammar_no_print_statement
+        try:
+            tree = self.driver.parse_string(data)
+        except Exception as err:
+            self.log_error("Can't parse %s: %s: %s",
+                           name, err.__class__.__name__, err)
+            return
+        finally:
+            self.driver.grammar = self.grammar
+        tree.future_features = features
+        self.log_debug("Refactoring %s", name)
+        self.refactor_tree(tree, name)
+        return tree
+
+    def refactor_stdin(self, doctests_only=False):
+        input = sys.stdin.read()
+        if doctests_only:
+            self.log_debug("Refactoring doctests in stdin")
+            output = self.refactor_docstring(input, "<stdin>")
+            if self.write_unchanged_files or output != input:
+                self.processed_file(output, "<stdin>", input)
+            else:
+                self.log_debug("No doctest changes in stdin")
+        else:
+            tree = self.refactor_string(input, "<stdin>")
+            if self.write_unchanged_files or (tree and tree.was_changed):
+                self.processed_file(str(tree), "<stdin>", input)
+            else:
+                self.log_debug("No changes in stdin")
+
+    def refactor_tree(self, tree, name):
+        """Refactors a parse tree (modifying the tree in place).
+
+        For compatible patterns the bottom matcher module is
+        used. Otherwise the tree is traversed node-to-node for
+        matches.
+
+        Args:
+            tree: a pytree.Node instance representing the root of the tree
+                  to be refactored.
+            name: a human-readable name for this tree.
+
+        Returns:
+            True if the tree was modified, False otherwise.
+        """
+
+        for fixer in chain(self.pre_order, self.post_order):
+            fixer.start_tree(tree, name)
+
+        #use traditional matching for the incompatible fixers
+        self.traverse_by(self.bmi_pre_order_heads, tree.pre_order())
+        self.traverse_by(self.bmi_post_order_heads, tree.post_order())
+
+        # obtain a set of candidate nodes
+        match_set = self.BM.run(tree.leaves())
+
+        while any(match_set.values()):
+            for fixer in self.BM.fixers:
+                if fixer in match_set and match_set[fixer]:
+                    #sort by depth; apply fixers from bottom(of the AST) to top
+                    match_set[fixer].sort(key=pytree.Base.depth, reverse=True)
+
+                    if fixer.keep_line_order:
+                        #some fixers(eg fix_imports) must be applied
+                        #with the original file's line order
+                        match_set[fixer].sort(key=pytree.Base.get_lineno)
+
+                    for node in list(match_set[fixer]):
+                        if node in match_set[fixer]:
+                            match_set[fixer].remove(node)
+
+                        try:
+                            find_root(node)
+                        except ValueError:
+                            # this node has been cut off from a
+                            # previous transformation ; skip
+                            continue
+
+                        if node.fixers_applied and fixer in node.fixers_applied:
+                            # do not apply the same fixer again
+                            continue
+
+                        results = fixer.match(node)
+
+                        if results:
+                            new = fixer.transform(node, results)
+                            if new is not None:
+                                node.replace(new)
+                                #new.fixers_applied.append(fixer)
+                                for node in new.post_order():
+                                    # do not apply the fixer again to
+                                    # this or any subnode
+                                    if not node.fixers_applied:
+                                        node.fixers_applied = []
+                                    node.fixers_applied.append(fixer)
+
+                                # update the original match set for
+                                # the added code
+                                new_matches = self.BM.run(new.leaves())
+                                for fxr in new_matches:
+                                    if not fxr in match_set:
+                                        match_set[fxr]=[]
+
+                                    match_set[fxr].extend(new_matches[fxr])
+
+        for fixer in chain(self.pre_order, self.post_order):
+            fixer.finish_tree(tree, name)
+        return tree.was_changed
+
+    def traverse_by(self, fixers, traversal):
+        """Traverse an AST, applying a set of fixers to each node.
+
+        This is a helper method for refactor_tree().
+
+        Args:
+            fixers: a list of fixer instances.
+            traversal: a generator that yields AST nodes.
+
+        Returns:
+            None
+        """
+        if not fixers:
+            return
+        for node in traversal:
+            for fixer in fixers[node.type]:
+                results = fixer.match(node)
+                if results:
+                    new = fixer.transform(node, results)
+                    if new is not None:
+                        node.replace(new)
+                        node = new
+
+    def processed_file(self, new_text, filename, old_text=None, write=False,
+                       encoding=None):
+        """
+        Called when a file has been refactored and there may be changes.
+        """
+        self.files.append(filename)
+        if old_text is None:
+            old_text = self._read_python_source(filename)[0]
+            if old_text is None:
+                return
+        equal = old_text == new_text
+        self.print_output(old_text, new_text, filename, equal)
+        if equal:
+            self.log_debug("No changes to %s", filename)
+            if not self.write_unchanged_files:
+                return
+        if write:
+            self.write_file(new_text, filename, old_text, encoding)
+        else:
+            self.log_debug("Not writing changes to %s", filename)
+
+    def write_file(self, new_text, filename, old_text, encoding=None):
+        """Writes a string to a file.
+
+        It first shows a unified diff between the old text and the new text, and
+        then rewrites the file; the latter is only done if the write option is
+        set.
+        """
+        try:
+            fp = io.open(filename, "w", encoding=encoding, newline='')
+        except OSError as err:
+            self.log_error("Can't create %s: %s", filename, err)
+            return
+
+        with fp:
+            try:
+                fp.write(new_text)
+            except OSError as err:
+                self.log_error("Can't write %s: %s", filename, err)
+        self.log_debug("Wrote changes to %s", filename)
+        self.wrote = True
+
+    PS1 = ">>> "
+    PS2 = "... "
+
+    def refactor_docstring(self, input, filename):
+        """Refactors a docstring, looking for doctests.
+
+        This returns a modified version of the input string.  It looks
+        for doctests, which start with a ">>>" prompt, and may be
+        continued with "..." prompts, as long as the "..." is indented
+        the same as the ">>>".
+
+        (Unfortunately we can't use the doctest module's parser,
+        since, like most parsers, it is not geared towards preserving
+        the original source.)
+        """
+        result = []
+        block = None
+        block_lineno = None
+        indent = None
+        lineno = 0
+        for line in input.splitlines(keepends=True):
+            lineno += 1
+            if line.lstrip().startswith(self.PS1):
+                if block is not None:
+                    result.extend(self.refactor_doctest(block, block_lineno,
+                                                        indent, filename))
+                block_lineno = lineno
+                block = [line]
+                i = line.find(self.PS1)
+                indent = line[:i]
+            elif (indent is not None and
+                  (line.startswith(indent + self.PS2) or
+                   line == indent + self.PS2.rstrip() + "\n")):
+                block.append(line)
+            else:
+                if block is not None:
+                    result.extend(self.refactor_doctest(block, block_lineno,
+                                                        indent, filename))
+                block = None
+                indent = None
+                result.append(line)
+        if block is not None:
+            result.extend(self.refactor_doctest(block, block_lineno,
+                                                indent, filename))
+        return "".join(result)
+
+    def refactor_doctest(self, block, lineno, indent, filename):
+        """Refactors one doctest.
+
+        A doctest is given as a block of lines, the first of which starts
+        with ">>>" (possibly indented), while the remaining lines start
+        with "..." (identically indented).
+
+        """
+        try:
+            tree = self.parse_block(block, lineno, indent)
+        except Exception as err:
+            if self.logger.isEnabledFor(logging.DEBUG):
+                for line in block:
+                    self.log_debug("Source: %s", line.rstrip("\n"))
+            self.log_error("Can't parse docstring in %s line %s: %s: %s",
+                           filename, lineno, err.__class__.__name__, err)
+            return block
+        if self.refactor_tree(tree, filename):
+            new = str(tree).splitlines(keepends=True)
+            # Undo the adjustment of the line numbers in wrap_toks() below.
+            clipped, new = new[:lineno-1], new[lineno-1:]
+            assert clipped == ["\n"] * (lineno-1), clipped
+            if not new[-1].endswith("\n"):
+                new[-1] += "\n"
+            block = [indent + self.PS1 + new.pop(0)]
+            if new:
+                block += [indent + self.PS2 + line for line in new]
+        return block
+
+    def summarize(self):
+        if self.wrote:
+            were = "were"
+        else:
+            were = "need to be"
+        if not self.files:
+            self.log_message("No files %s modified.", were)
+        else:
+            self.log_message("Files that %s modified:", were)
+            for file in self.files:
+                self.log_message(file)
+        if self.fixer_log:
+            self.log_message("Warnings/messages while refactoring:")
+            for message in self.fixer_log:
+                self.log_message(message)
+        if self.errors:
+            if len(self.errors) == 1:
+                self.log_message("There was 1 error:")
+            else:
+                self.log_message("There were %d errors:", len(self.errors))
+            for msg, args, kwds in self.errors:
+                self.log_message(msg, *args, **kwds)
+
+    def parse_block(self, block, lineno, indent):
+        """Parses a block into a tree.
+
+        This is necessary to get correct line number / offset information
+        in the parser diagnostics and embedded into the parse tree.
+        """
+        tree = self.driver.parse_tokens(self.wrap_toks(block, lineno, indent))
+        tree.future_features = frozenset()
+        return tree
+
+    def wrap_toks(self, block, lineno, indent):
+        """Wraps a tokenize stream to systematically modify start/end."""
+        tokens = tokenize.generate_tokens(self.gen_lines(block, indent).__next__)
+        for type, value, (line0, col0), (line1, col1), line_text in tokens:
+            line0 += lineno - 1
+            line1 += lineno - 1
+            # Don't bother updating the columns; this is too complicated
+            # since line_text would also have to be updated and it would
+            # still break for tokens spanning lines.  Let the user guess
+            # that the column numbers for doctests are relative to the
+            # end of the prompt string (PS1 or PS2).
+            yield type, value, (line0, col0), (line1, col1), line_text
+
+
+    def gen_lines(self, block, indent):
+        """Generates lines as expected by tokenize from a list of lines.
+
+        This strips the first len(indent + self.PS1) characters off each line.
+        """
+        prefix1 = indent + self.PS1
+        prefix2 = indent + self.PS2
+        prefix = prefix1
+        for line in block:
+            if line.startswith(prefix):
+                yield line[len(prefix):]
+            elif line == prefix.rstrip() + "\n":
+                yield "\n"
+            else:
+                raise AssertionError("line=%r, prefix=%r" % (line, prefix))
+            prefix = prefix2
+        while True:
+            yield ""
+
+
+class MultiprocessingUnsupported(Exception):
+    pass
+
+
+class MultiprocessRefactoringTool(RefactoringTool):
+
+    def __init__(self, *args, **kwargs):
+        super(MultiprocessRefactoringTool, self).__init__(*args, **kwargs)
+        self.queue = None
+        self.output_lock = None
+
+    def refactor(self, items, write=False, doctests_only=False,
+                 num_processes=1):
+        if num_processes == 1:
+            return super(MultiprocessRefactoringTool, self).refactor(
+                items, write, doctests_only)
+        try:
+            import multiprocessing
+        except ImportError:
+            raise MultiprocessingUnsupported
+        if self.queue is not None:
+            raise RuntimeError("already doing multiple processes")
+        self.queue = multiprocessing.JoinableQueue()
+        self.output_lock = multiprocessing.Lock()
+        processes = [multiprocessing.Process(target=self._child)
+                     for i in range(num_processes)]
+        try:
+            for p in processes:
+                p.start()
+            super(MultiprocessRefactoringTool, self).refactor(items, write,
+                                                              doctests_only)
+        finally:
+            self.queue.join()
+            for i in range(num_processes):
+                self.queue.put(None)
+            for p in processes:
+                if p.is_alive():
+                    p.join()
+            self.queue = None
+
+    def _child(self):
+        task = self.queue.get()
+        while task is not None:
+            args, kwargs = task
+            try:
+                super(MultiprocessRefactoringTool, self).refactor_file(
+                    *args, **kwargs)
+            finally:
+                self.queue.task_done()
+            task = self.queue.get()
+
+    def refactor_file(self, *args, **kwargs):
+        if self.queue is not None:
+            self.queue.put((args, kwargs))
+        else:
+            return super(MultiprocessRefactoringTool, self).refactor_file(
+                *args, **kwargs)