No type inference for Response type in collector when using PyCharm

[JosXa]

When using async with controller.collect(...) as response, PyCharm fails to understand the AsyncContextManager[Response] type annotation and infers response as Any.

This is due to a bug in PyCharm itself, which is reported on their YouTrack board (and not planned since two years): https://youtrack.jetbrains.com/issue/PY-29891

If someone wants to look into this, here are the relevant type annotations:

• collect in BotController
• collect in collector (used by the controller)

Now, since this is the integral part of tgintegration, we need to find a solution (Update 2020-10-25: # type: Response has been added to all examples):

1. Leave it as it is, wait for and push JetBrains to fix the bug (I'd need help from the community for that). Add documentation on how to use typing.cast or as response: # type: Response as workarounds.
2. Keep trying to find another workaround that will make PyCharm happy.
3. Re-architect the @asynccontextmanager design (please no, I find it great 🤦)

[JosXa]

Seems there is a bugfix in the works: https://youtrack.jetbrains.com/issue/PY-36444/PyCharm-doesnt-infer-types-when-using-contextlib.contextmanager-decorator