Unpacking Python's Type Annotations

Question

I\'m trying to generate some JavaScript based on the type annotations I have provided in on some Python functions by using the signature() function in the

Answer 1

Python 3.8 provides typing.get_origin() and typing.get_args() for this!

assert get_origin(Dict[str, int]) is dict
assert get_args(Dict[int, str]) == (int, str)

assert get_origin(Union[int, str]) is Union
assert get_args(Union[int, str]) == (int, str)

See https://docs.python.org/3/library/typing.html#typing.get_origin