retype.py
def parse_arguments(arguments):
    """parse_arguments('(a, b, *, c=False, **d)') -> ast3.arguments

    Parse a string with function arguments into an AST node.
    """
    arguments = f"def f{arguments}: ..."
    try:
        result = ast3.parse(arguments, '<arguments>', 'exec')
    except SyntaxError:
        raise ValueError(f"invalid arguments: {arguments!r}") from None

    assert isinstance(result, ast3.Module)
    assert len(result.body) == 1
    assert isinstance(result.body[0], ast3.FunctionDef)
    args = result.body[0].args
    copy_type_comments_to_annotations(args)
    return args
def parse_arguments(arguments):
    """parse_arguments('(a, b, *, c=False, **d)') -> ast3.arguments

    Parse a string with function arguments into an AST node.
    """
    arguments = f"def f{arguments}: ..."
    try:
        result = ast3.parse(arguments, '<arguments>', 'exec')
    except SyntaxError:
        raise ValueError(f"invalid arguments: {arguments!r}") from None

    assert isinstance(result, ast3.Module)
    assert len(result.body) == 1
    assert isinstance(result.body[0], ast3.FunctionDef)
    args = result.body[0].args
    copy_type_comments_to_annotations(args)
    return args
def parse_arguments ( arguments ) : arguments = f"def f{arguments}: ..." try : result = ast3 . parse ( arguments , '<arguments>' , 'exec' ) except SyntaxError : raise ValueError ( f"invalid arguments: {arguments!r}" ) from None assert isinstance ( result , ast3 . Module ) assert len ( result . body ) == 1 assert isinstance ( result . body [ 0 ] , ast3 . FunctionDef ) args = result . body [ 0 ] . args copy_type_comments_to_annotations ( args ) return args
parse_arguments('(a, b, *, c=False, **d)') -> ast3.arguments

    Parse a string with function arguments into an AST node.
parse_arguments ( ( a b * c = False ** d ) ) - > ast3 . arguments