chore: Reintroduce Python 3.11 support

[nahua-aignx]

Hello @Yolley, first of all thank you for forking and creating this package. My team is currently looking for a package that supports dynamic TTL calculation and distributed locking and fastapi-cache2-fork satisfies these needs. Unfortunately, some of our services are still on py3.11.

I took a quick look and the code changes to bring back py3.11 support should be minimal, e.g. dec_hook[T] → dec_hook which uses the TypeVar that's still available in the coder.py module. The rest I could found would just be config changes (pyproject.toml, tox.ini, CI matrix).

May I ask if you'd be open to a PR to restore Python 3.11 support? Thanks in any case!

[Yolley]

Hey, thank you for contribution, I'll merge the changes, but then also make some adjustments and make a release.

• we also use new generic syntax in Cached, so we should also fallback to old syntax there;
• python3.11 does not have markcoroutinefunction, and also I didn't find a proper way to make inspect.iscoroutinefunction recognize Cached decorator as a coroutine. I think I found a workaround, but it will work only for asyncio.iscoroutinefunction sadly;
• also I found a bug with type annotations that I need to fix - cached technically does support sync functions, but we annotate only async functions as decorator argument, so I need to fix this.

[nahua-aignx]

It seems due to my lack of familiarity with the code changes that I underestimated the scope of changes. I'd like to apologize and reiterate my thanks for your time and help here!

[Yolley]

@nahua-aignx 2.3.0 is released with 3.11 support https://pypi.org/project/fastapi-cache2-fork/