3.11 asyncio will get trio-like Task Groups and Exception Groups

[gnat]

https://mobile.twitter.com/1st1/status/1493748843430567942

https://realpython.com/python311-exception-groups/

https://bugs.python.org/issue46752

What does this mean for Starlette? Is it possible we may be removing the AnyIO integration and returning to zero dependencies for 1.0? #51

Related: #1157 #1700 #1678

[adriangb]

I don't think so, not any time soon at least. For starters 3.11 won't be the minimum supported Python version for like 4 years.

I also don't see how #1700 and #1678 are related to this: they are not cause by anyio, we'd have all of the same problems using the standard librarie's TaskGroup and most of the same problems using asyncio.create_task.

[rednafi]

Not only this. Correct me if I'm wrong, anyio also gives us compatibility with other event loop implementations like Trio or Curio.

[adriangb]

Yes, indeed

[Kludex]

Not curio

[florimondmanca]

The way I see it, additions to Python like these are primarily for the benefit of end-users. Library authors don't get to use these newest additions unless a/ there are installable backports (eg. async-generator) or b/ libraries drop support for previous versions.

Although asyncio.TaskGroup relies on PEP-654 which (unfortunately?) adds syntax (except*), backports might be made available by unwrapping in plain pre-3.11 code the logic that except* implements.