aio-libs / multidict / 38229745696

86%

push

github

Drop Python 3.10 support (#1777)

<!-- Thank you for your contribution! -->

## What do these changes do?

Drops Python 3.10, which has reached end of life. `requires-python`
becomes `>= 3.11`, the `typing-extensions` dependency and the 3.10 CI
legs go away (PyPy moves to 3.11), and ruff targets `py311`. The C
extension loses its `PyType_GetModuleByDef()` fallback for pre-3.11
interpreters, so the compiled code on 3.11+ is unchanged. `Self` and
`assert_never` are imported from `typing` directly, and comments that
mentioned 3.10 are updated.

## Are there changes in behavior for the user?

Yes, multidict no longer installs on Python 3.10.

## Is it a substantial burden for the maintainers to support this?

No, it removes code.

## Related issue number

N/A

## Checklist

- [x] I think the code is well written
- [ ] Unit tests for the changes exist (N/A, no new behaviour)
- [x] Documentation reflects the changes
- [ ] If you provide code modification, please add yourself to
`CONTRIBUTORS.txt` (N/A)
- [x] Add a new news fragment into the `CHANGES/` folder
- [x] `make doc-spelling` passes and any new technical words are added
to `docs/spelling_wordlist.txt`

Drafted with Claude Code (Claude Opus 5.5); reviewed by @asvetlov.

<details>
<summary>Agent run details (optional, for reviewers)</summary>

All on CPython 3.11.13:

- C extension: `pytest -q -m "not leaks and not hypothesis"`, 4251
passed
- Hypothesis: `pytest -q -m hypothesis`, 142 passed
- Pure Python: `MULTIDICT_NO_EXTENSIONS=1 pytest -q --no-c-extensions -m
"not leaks and not hypothesis"`, 1683 passed
- `pre-commit run --all-files` and `make doc-spelling`: clean
- pip on 3.10.17 refuses the package (`requires a different Python`)

`tools/check_inlining.py` was not run; the only C code removed sat under
`#if PY_VERSION_HEX < 0x030b0000`.
</details>

832 of 1664 branches covered (50.0%)

Branch coverage included in aggregate %.

3 of 3 new or added lines in 3 files covered. (100.0%)

9763 of 10652 relevant lines covered (91.65%)

1.83 hits per line