__main__.py 文件源码

def __init__(self, option_strings, dest, nargs=None, const=None,
                 default=None, type=None, choices=None, required=False,
                 help=None, metavar=None):
        assert nargs != 0 and (const is None or nargs == argparse.OPTIONAL)
        super().__init__(option_strings=option_strings, dest=dest, nargs=nargs,
                         const=const, default=default, type=type,
                         choices=choices, required=required, help=help,
                         metavar=metavar)