Get element type of list type [duplicate]

Answer 1

I believe that you should be able to check the __args__ parameter:

>>> from typing import Dict, List, Type, TypeVar
>>> List[Dict].__args__
(typing.Dict,)
>>> List[int].__args__
(<class 'int'>,)

But note from the docs:

Note The typing module has been included in the standard library on a provisional basis. New features might be added and API may change even between minor releases if deemed necessary by the core developers.

So this probably isn't future proof.