mypy native support for assert_type

[Rogdham]

Hello,

It seems that mypy now has support for assert_type (related PR).

Btw, assert_type will be in stdlib starting from Python 3.11 (although not doing anything by itself).

So I'm curious: does your library provide any added features, or was it just a temporary way to have an assert_type function until the implementation in mypy?

[thejcannon]

The latter, for sure "temporary way to have an assert_type function until the implementation in mypy"

I had some code which was very complex in terms of generic typing and needed a way to make sure changes to the codebase didn't change the resulting typing, and at the time mypy didn't support it (and I couldn't use the other type-checking libraries).

I'll be very happy to archive this library/repo when assert_type is something I'll be able to use in my code 😅

[Rogdham]

Alright, noted, thank you for the answer!

Right now, something like the following can be used:

if TYPE_CHECKING:
    from typing_extensions import assert_type
else:
    def assert_type(val, _):
        return val