Fix autodoc tests for Python 3.11+

[hugovk]

Feature or Bugfix

• Bugfix

Purpose

• Fix the CI

Detail

Since Python 3.11.7, 3.12.0 and 3.13.0a2, "list of weak references to the object (if defined)" was changed to "list of weak references to the object".

Add a version check to decide text to assert.

Before: https://github.com/sphinx-doc/sphinx/actions/runs/7158385030?pr=11791

After: https://github.com/sphinx-doc/sphinx/actions/runs/7166386276?pr=11793

("Docutils HEAD" fails because https://repo.or.cz/docutils.git/ is 403 -- see PR #11794 -- and Windows fails with test_gettext_dont_rebuild_mo.)

---

Also in Ruff v0.1.0:

The --format option has been removed from ruff check, use --output-format instead

So use that option for "Lint with latest Ruff" to prevent error: unexpected argument '--format' found.

https://github.com/astral-sh/ruff/releases/tag/v0.1.0

Relates

• gh-112266: Remove (if defined) part from __dict__ and __weakref__ docstrings python/cpython#112268

[AlexWaygood]

Sorry for the breakage from CPython! It was my decision to backport, and I probably should have thought more carefully about the possible impact on documentation tools like Sphinx.

Thanks so much @hugovk for filing the PR to fix things!

[sobolevn]

I propose simplifing this check.

[hugovk]

See also PR #11774 and issue #11775 which were opened earlier.