How to use the uncompyle6.scanners.tok.Token function in uncompyle6

def test_token():
    # Test token formatting of: LOAD_CONST None
    t = Token('LOAD_CONST', offset=0, attr=None, pattr=None, has_arg=True)
    expect = '           0  LOAD_CONST               None'
    # print(t.format())
    assert t
    assert t.format() == expect

    # Make sure equality testing of tokens ignores offset
    t2 = Token('LOAD_CONST', offset=2, attr=None, pattr=None, has_arg=True)
    assert t2 == t


    # Make sure formatting of: LOAD_CONST False. We assume False is the 0th index
    # of co_consts.
    t = Token('LOAD_CONST', offset=1, attr=False, pattr=False, has_arg=True)
    expect = '           1  LOAD_CONST            0  False'
    assert t.format() == expect

def __hash__(self):
        return hash(self.kind)

    def __getitem__(self, i):
        raise IndexError

    def off2int(self):
        if isinstance(self.offset, int):
            return self.offset
        else:
            assert isinstance(self.offset, str)
            return(int(self.offset.split("_")[0]))


NoneToken = Token("LOAD_CONST", offset=-1, attr=None, pattr=None)

try:
            if first_stmt == NAME_MODULE:
                if self.hide_internal:
                    del ast[0]
                    first_stmt = ast[0][0]
            pass
        except:
            pass

        have_qualname = False
        if self.version < 3.0:
            # Should we ditch this in favor of the "else" case?
            qualname = '.'.join(self.classes)
            QUAL_NAME = AST('stmt',
                            [ AST('assign',
                                  [ AST('expr', [Token('LOAD_CONST', pattr=qualname)]),
                                    AST('store', [ Token('STORE_NAME', pattr='__qualname__')])
                                  ])])
            have_qualname = (ast[0][0] == QUAL_NAME)
        else:
            # Python 3.4+ has constants like 'cmp_to_key..K'
            # which are not simple classes like the < 3 case.
            try:
                if (first_stmt[0] == 'assign' and
                    first_stmt[0][0][0] == 'LOAD_CONST' and
                    first_stmt[0][1] == 'store' and
                    first_stmt[0][1][0] == Token('STORE_NAME', pattr='__qualname__')):
                    have_qualname = True
            except:
                pass

        if have_qualname:

def transform(self, ast):
        self.maybe_show_tree(ast)
        self.ast = copy(ast)
        self.ast = self.traverse(self.ast, is_lambda=False)

        try:
            for i in range(len(self.ast)):
                if is_docstring(self.ast[i]):
                    docstring_ast = SyntaxTree(
                        "docstring",
                        [
                            Token(
                                "LOAD_STR",
                                has_arg=True,
                                offset=0,
                                pattr=self.ast[i][0][0][0][0].attr,
                            )
                        ],
                        transformed_by="transform",
                    )
                    del self.ast[i]
                    self.ast.insert(0, docstring_ast)
                    break

            if self.ast[-1] == RETURN_NONE:
                self.ast.pop()  # remove last node
                # todo: if empty, add 'pass'
        except:

if version <= 2.4:
            TABLE_DIRECT.update({
                'importmultiple': ( '%|import %c%c\n', 2, 3),
                'import_cont'   : ( ', %c', 2),
                })
            if version == 2.3:
                TABLE_DIRECT.update({
                    'if1_stmt':	( '%|if 1\n%+%c%-', 5 )
                })

            global NAME_MODULE
            NAME_MODULE = AST('stmt',
                              [ AST('assign',
                                    [ AST('expr',
                                          [Token('LOAD_GLOBAL', pattr='__name__',
                                                 offset=0, has_arg=True)]),
                                      AST('store',
                                          [ Token('STORE_NAME', pattr='__module__',
                                                  offset=3, has_arg=True)])
                                    ])])
            pass
            if version <= 2.3:
                TABLE_DIRECT.update({
                    'tryfinallystmt': ( '%|try:\n%+%c%-%|finally:\n%+%c%-\n\n', 1, 4 )
                })
                if version <= 2.1:
                    TABLE_DIRECT.update({
                        'importmultiple': ( '%c', 2 ),
                        'imports_cont': ( '%c', 2 ),
                        # FIXME: not quite right. We have indiividual imports
                        # when there is in fact one: "import a, b, ..."

'importmultiple': ( '%|import %c%c\n', 2, 3),
                'import_cont'   : ( ', %c', 2),
                })
            if version == 2.3:
                TABLE_DIRECT.update({
                    'if1_stmt':	( '%|if 1\n%+%c%-', 5 )
                })

            global NAME_MODULE
            NAME_MODULE = AST('stmt',
                              [ AST('assign',
                                    [ AST('expr',
                                          [Token('LOAD_GLOBAL', pattr='__name__',
                                                 offset=0, has_arg=True)]),
                                      AST('store',
                                          [ Token('STORE_NAME', pattr='__module__',
                                                  offset=3, has_arg=True)])
                                    ])])
            pass
            if version <= 2.3:
                TABLE_DIRECT.update({
                    'tryfinallystmt': ( '%|try:\n%+%c%-%|finally:\n%+%c%-\n\n', 1, 4 )
                })
                if version <= 2.1:
                    TABLE_DIRECT.update({
                        'importmultiple': ( '%c', 2 ),
                        'imports_cont': ( '%c', 2 ),
                        # FIXME: not quite right. We have indiividual imports
                        # when there is in fact one: "import a, b, ..."
                        'imports_cont': ( '%C%,', (1, 100, '\n') ),
                    })
                    pass

'dict_comp':              0,
    'generator_exp':          0,  # (expressions...)
    'list':                   0,  # [expressions...]
    'list_comp':              0,
    'set_comp':               0,
    'set_comp_expr':          0,
    'unary_convert':          0,
}

LINE_LENGTH = 80

# Some parse trees created below are used for comparing code
# fragments (like 'return None' at the end of functions).

RETURN_LOCALS = SyntaxTree('return',
                    [ SyntaxTree('ret_expr', [SyntaxTree('expr', [ Token('LOAD_LOCALS') ])]),
                      Token('RETURN_VALUE')])

NONE = SyntaxTree('expr', [ NoneToken ] )

RETURN_NONE = SyntaxTree('stmt',
                  [ SyntaxTree('return',
                        [ NONE, Token('RETURN_VALUE')]) ])

PASS = SyntaxTree('stmts',
           [ SyntaxTree('sstmt',
                 [ SyntaxTree('stmt',
                       [ SyntaxTree('pass', [])])])])

ASSIGN_DOC_STRING = lambda doc_string, doc_load: \
  SyntaxTree('stmt',
      [ SyntaxTree('assign',

# The bytecode for the end of the main routine has a
        # "return None". However you can't issue a "return" statement in
        # main. So as the old cigarette slogan goes: I'd rather switch (the token stream)
        # than fight (with the grammar to not emit "return None").
        if self.hide_internal:
            if len(tokens) >= 2 and not noneInNames:
                if tokens[-1].kind in ('RETURN_VALUE', 'RETURN_VALUE_LAMBDA'):
                    # Python 3.4's classes can add a "return None" which is
                    # invalid syntax.
                    if tokens[-2].kind == 'LOAD_CONST':
                        if isTopLevel or tokens[-2].pattr is None:
                            del tokens[-2:]
                        else:
                            tokens.append(Token('RETURN_LAST'))
                    else:
                        tokens.append(Token('RETURN_LAST'))
            if len(tokens) == 0:
                return PASS

        # Build AST from disassembly.
        try:
            ast = python_parser.parse(self.p, tokens, customize)
        except (python_parser.ParserError, AssertionError) as e:
            raise ParserError(e, tokens)

        maybe_show_ast(self.showast, ast)

        checker(ast, False, self.ast_errors)

        return ast

"else_suite",
                        "opt_come_from_except",
                    ),
                ),
            ):
                return False

            # Make sure all of the "come froms" offset at the
            # end of the "if" come from somewhere inside the "if".
            # Since the come_froms are ordered so that lowest
            # offset COME_FROM is last, it is sufficient to test
            # just the last one.
            come_froms = ast[-1]
            if come_froms == "opt_come_from_except" and len(come_froms) > 0:
                come_froms = come_froms[0]
            if not isinstance(come_froms, Token):
                return tokens[first].offset > come_froms[-1].attr
            elif tokens[first].offset > come_froms.attr:
                return True

            # For mysterious reasons a COME_FROM in tokens[last+1] might be part of the grammar rule
            # even though it is not found in come_froms.
            # Work around this.
            if (
                last < n
                and tokens[last] == "COME_FROM"
                and tokens[first].offset > tokens[last].attr
            ):
                return True

            testexpr = ast[0]

def is_return_none(self, node):
        # Is there a better way?
        ret = (node[0] == 'ret_expr'
               and node[0][0] == 'expr'
               and node[0][0][0] == 'LOAD_CONST'
               and node[0][0][0].pattr is None)
        if self.version <= 2.6:
            return ret
        else:
            # FIXME: should the AST expression be folded into
            # the global RETURN_NONE constant?
            return (ret or
                    node == AST('return_stmt',
                                [AST('ret_expr', [NONE]), Token('RETURN_VALUE')]))