typing updates for Task

[albertz]

Also removed Python 2 style code to derive from object.

I did not cover update_rqmt yet because this would require Protocol (not just Callable), and I'm not sure if we want that (requires Python 3.8).

[michelwi]

Suggested change

	args: Optional[Sequence[Union[List[Any], Any]]] = None,
	args: Optional[Sequence[Any]] = None,

can already be Any and List[Any] is contained in Any.

[albertz]

Yea I know, but sometimes I prefer this to give some more specific type hints to what types would be specifically expected here, or specially handled, even though other types (any other types) would also be ok.

Also, I basically just translated the typing from the earlier docstring. I also wondered a bit about why this is here at all, and I thought there is indeed maybe a special meaning when there is a list?

[michelwi]

did not cover update_rqmt yet because this would require Protocol (not just Callable), and I'm not sure if we want that

Why would Callable[[Dict[str, Any], Dict[str, Any]], Dict[str, Any]] not work?

[albertz]

did not cover update_rqmt yet because this would require Protocol (not just Callable), and I'm not sure if we want that

Why would Callable[[Dict[str, Any], Dict[str, Any]], Dict[str, Any]] not work?

We call self._update_rqmt(last_rqmt=last_rqmt, last_usage=last_usage), i.e. we use named args, which is not supported by Callable.

[NeoLegends]

👍