Over the years a lot of issues have accumulated for asyncio.wait_for and the code has become complicated. The asyncio.timeout can be used to simplify this a lot and will also fix bugs which are already fixed or don't exist in asyncio.timeout. This rewrite won't be backported. asyncio.wait_for should be nothing more than a wrapper around asyncio.timeout.

asyncio.wait_for issues: https://github.com/python/cpython/issues?q=is%3Aissue+is%3Aopen+wait_for+label%3Aexpert-asyncio

Linked PRs

• GH-96764: rewrite asyncio.wait_for to use asyncio.timeout #98518