现在我有了一个参数，它允许四个值：范围解析操作符: 由两个冒号组成（::），专门用于通过类直接访问...
action: Union[str, Type[Action]] = ..., nargs: Union[int, str] = ..., const: Any = ..., default: Any = ..., type: Union[(str) -> _T, (str) -> _T, FileType] = ..., choices: Iterable[_T] = ..., required: bool = ..., help: Optional[str] = ..., metavar: ...
➜ image-collage-maker git:(master) python make_img.py --path AllImages --recursive --resize_opt stretch --sort rand File "make_img.py", line 30 def __init__(self, type: Any, help: str, default=None, nargs=None, choices: List[Any]=None) -...