add free-threading CI for Python 3.14

[kumaraditya303]

What do these changes do?

This adds free-threading for CPython 3.14.

Are there changes in behavior for the user?

No

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

No

Related issue number

Checklist

• I think the code is well written
• Unit tests for the changes exist
• Documentation reflects the changes
• If you provide code modification, please add yourself to CONTRIBUTORS.txt
  • The format is <Name> <Surname>.
  • Please keep alphabetical order, the file is sorted by names.
• Add a new news fragment into the CHANGES/ folder

  • name it <issue_or_pr_num>.<type>.rst (e.g. 588.bugfix.rst)

  • if you don't have an issue number, change it to the pull request
    number after creating the PR

    • .bugfix: A bug fix for something the maintainers deemed an
      improper undesired behavior that got corrected to match
      pre-agreed expectations.
    • .feature: A new behavior, public APIs. That sort of stuff.
    • .deprecation: A declaration of future API removals and breaking
      changes in behavior.
    • .breaking: When something public is removed in a breaking way.
      Could be deprecated in an earlier release.
    • .doc: Notable updates to the documentation structure or build
      process.
    • .packaging: Notes for downstreams about unobvious side effects
      and tooling. Changes in the test invocation considerations and
      runtime assumptions.
    • .contrib: Stuff that affects the contributor experience. e.g.
      Running tests, building the docs, setting up the development
      environment.
    • .misc: Changes that are hard to assign to any of the above
      categories.

  • Make sure to use full sentences with correct case and punctuation,
    for example:

    Fixed issue with non-ascii contents in doctest text files
    -- by :user:`contributor-gh-handle`.

    Use the past tense or the present tense a non-imperative mood,
    referring to what's changed compared to the last released version
    of this project.

[codspeed-hq]

CodSpeed Performance Report

Merging #11466 will not alter performance

_{Comparing kumaraditya303:ft2 (359fbc5) with master (a9f248a)¹}

Summary

✅ 59 untouched

Footnotes

1. No successful run was found on master (a3f033a) during the generation of this report, so a9f248a was used instead as the comparison base. There might be some changes unrelated to this pull request in this report. ↩

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.75%. Comparing base (40a9dd8) to head (359fbc5).
⚠️ Report is 352 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master   #11466   +/-   ##
=======================================
  Coverage   98.75%   98.75%           
=======================================
  Files         127      127           
  Lines       43355    43355           
  Branches     2325     2325           
=======================================
  Hits        42815    42815           
  Misses        385      385           
  Partials      155      155           

Flag	Coverage Δ
CI-GHA	98.63% <ø> (ø)
OS-Linux	98.37% <ø> (ø)
OS-Windows	96.69% <ø> (ø)
OS-macOS	97.56% <ø> (ø)
Py-3.10.11	97.21% <ø> (+<0.01%)	⬆️
Py-3.10.18	97.71% <ø> (+<0.01%)	⬆️
Py-3.11.13	97.90% <ø> (-0.01%)	⬇️
Py-3.11.9	97.41% <ø> (+<0.01%)	⬆️
Py-3.12.10	97.51% <ø> (ø)
Py-3.12.11	98.02% <ø> (+<0.01%)	⬆️
Py-3.13.7	98.26% <ø> (ø)
Py-3.9.13	97.10% <ø> (ø)
Py-3.9.23	97.61% <ø> (+<0.01%)	⬆️
Py-pypy3.9.19-7.3.16	82.60% <ø> (-12.38%)	⬇️
VM-macos	97.56% <ø> (ø)
VM-ubuntu	98.37% <ø> (ø)
VM-windows	96.69% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[webknjaz]

FTR, CFFI v2.0.0 is in the deps now: #11488.

[kumaraditya303]

I am waiting for a cryptography release with free-threading support pyca/cryptography#12555

[bdraco]

I think we backported the free threading support to 3.12 as well. Let me take a look

[bdraco]

#11468 was trivial so it did go back to 3.12 so we can take for 3.12 as well. Its unlikely we would start shipping 3.13 before CPython 3.14 anyways

[bdraco]

tests/test_cookiejar.py::test_pickle_format is failing, but I think thats expected as it likely changed in 3.14

[kumaraditya303]

tests/test_cookiejar.py::test_pickle_format is failing, but I think thats expected as it likely changed in 3.14

Yes, it is unrelated #11503

[bdraco]

Thanks @kumaraditya303

[patchback]

Backport to 3.12: 💔 cherry-picking failed — conflicts found

❌ Failed to cleanly apply d9a4714 on top of patchback/backports/3.12/d9a4714d5ab4d7084975e6067654cdb85f9f61d1/pr-11466

Backporting merged PR #11466 into master

1. Ensure you have a local repo clone of your fork. Unless you cloned it
   from the upstream, this would be your origin remote.
2. Make sure you have an upstream repo added as a remote too. In these
   instructions you'll refer to it by the name upstream. If you don't
   have it, here's how you can add it:

   $ git remote add upstream https://github.com/aio-libs/aiohttp.git

3. Ensure you have the latest copy of upstream and prepare a branch
   that will hold the backported code:

   $ git fetch upstream
   $ git checkout -b patchback/backports/3.12/d9a4714d5ab4d7084975e6067654cdb85f9f61d1/pr-11466 upstream/3.12

4. Now, cherry-pick PR add free-threading CI for Python 3.14 #11466 contents into that branch:

   $ git cherry-pick -x d9a4714d5ab4d7084975e6067654cdb85f9f61d1

   If it'll yell at you with something like fatal: Commit d9a4714d5ab4d7084975e6067654cdb85f9f61d1 is a merge but no -m option was given., add -m 1 as follows instead:

   $ git cherry-pick -m1 -x d9a4714d5ab4d7084975e6067654cdb85f9f61d1

5. At this point, you'll probably encounter some merge conflicts. You must
   resolve them in to preserve the patch from PR add free-threading CI for Python 3.14 #11466 as close to the
   original as possible.
6. Push this branch to your fork on GitHub:

   $ git push origin patchback/backports/3.12/d9a4714d5ab4d7084975e6067654cdb85f9f61d1/pr-11466

7. Create a PR, ensure that the CI is green. If it's not — update it so that
   the tests and any other checks pass. This is it!
   Now relax and wait for the maintainers to process your pull request
   when they have some cycles to do reviews. Don't worry — they'll tell you if
   any improvements are necessary when the time comes!

🤖 @patchback
I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.

[patchback]

Backport to 3.13: 💔 cherry-picking failed — conflicts found

❌ Failed to cleanly apply d9a4714 on top of patchback/backports/3.13/d9a4714d5ab4d7084975e6067654cdb85f9f61d1/pr-11466

Backporting merged PR #11466 into master

1. Ensure you have a local repo clone of your fork. Unless you cloned it
   from the upstream, this would be your origin remote.
2. Make sure you have an upstream repo added as a remote too. In these
   instructions you'll refer to it by the name upstream. If you don't
   have it, here's how you can add it:

   $ git remote add upstream https://github.com/aio-libs/aiohttp.git

3. Ensure you have the latest copy of upstream and prepare a branch
   that will hold the backported code:

   $ git fetch upstream
   $ git checkout -b patchback/backports/3.13/d9a4714d5ab4d7084975e6067654cdb85f9f61d1/pr-11466 upstream/3.13

4. Now, cherry-pick PR add free-threading CI for Python 3.14 #11466 contents into that branch:

   $ git cherry-pick -x d9a4714d5ab4d7084975e6067654cdb85f9f61d1

   If it'll yell at you with something like fatal: Commit d9a4714d5ab4d7084975e6067654cdb85f9f61d1 is a merge but no -m option was given., add -m 1 as follows instead:

   $ git cherry-pick -m1 -x d9a4714d5ab4d7084975e6067654cdb85f9f61d1

5. At this point, you'll probably encounter some merge conflicts. You must
   resolve them in to preserve the patch from PR add free-threading CI for Python 3.14 #11466 as close to the
   original as possible.
6. Push this branch to your fork on GitHub:

   $ git push origin patchback/backports/3.13/d9a4714d5ab4d7084975e6067654cdb85f9f61d1/pr-11466

7. Create a PR, ensure that the CI is green. If it's not — update it so that
   the tests and any other checks pass. This is it!
   Now relax and wait for the maintainers to process your pull request
   when they have some cycles to do reviews. Don't worry — they'll tell you if
   any improvements are necessary when the time comes!

🤖 @patchback
I'm built with octomachinery and
my source is open — https://github.com/sanitizers/patchback-github-app.

[bdraco]

I'll take care of the backports

[bdraco]

Backport to 3.12 isn't going well. Looks like we will try to release 3.13 soon instead.