__init__.py 文件源码

def get_arg_names(f):
    """Return arguments of function

    :param f:
    :return: String list of arguments
    """
    try:
        # Python >= 3.3
        sig = inspect.signature(f)
        return [parameter.name for parameter in sig.parameters.values()
                if parameter.kind == parameter.POSITIONAL_OR_KEYWORD]
    except AttributeError:
        try:
            # Python >= 3.0
            return inspect.getfullargspec(f).args
        except AttributeError:
            return inspect.getargspec(f).args