Hugo van Kemenade (@hugovk@mastodon.social)

76d

Release day!

First off, check blockers and buildbots.

A new release-blocker appeared yesterday (because of course) but it can wait until 3.14.1.

https://github.com/python/cpython/labels/release-blocker

Three deferred-blockers are also waiting until 3.14.1.

https://github.com/python/cpython/labels/deferred-blocker

A new tier-2 buildbot failure appeared yesterday (because of course) but it had previously been offline for a month and will need some reconfiguration. Can ignore.

https://buildbot.python.org/#/release_status

OK, let's make a Python!

#Python #Python314 #release

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Next up, merge and backport the final change to What's New in Python 3.14 to declare it latest stable.
https://github.com/python/cpython/pull/139631

Now start run_release.py, the main release automation script, which does a bunch of pre-checks, runs blurb to create a merged changelog, bumps some numbers, and pushes a branch and tag to my fork. It'll go upstream at the end of a successful build.

Then kick off the CI to build source zips, docs and Android binaries.
https://github.com/python/release-tools/actions/runs/18308460797

#Python #Python314 #release

A GitHub Actions build matrix showing an initial verify-input followed by parallel build-source (itself followed by test-source), build-docs, and build-android (consisting of aarch64 and x86_64 jobs).

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(That's actually the second CI attempt, we had to update some script arguments following an Android test runner update.)

This build takes about half an hour.

I've also informed the Windows and macOS release managers about the tag and they will start up installer builds.

This takes a few hours, so I've got time to finish up the release notes.

PEP 101 is the full process, but much is automated and we don't need to follow it all manually.

https://peps.python.org/pep-0101/

#Python #Python314 #release

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The Windows build has been started.

The jobs with profile-guided optimisation (PGO) build once, then collect a profile by running the tests, and then build again using that profile, to see how "real" code executes and optimises for that.

https://dev.azure.com/Python/cpython/_build/results?buildId=164907&view=results

Meanwhile, the docs+source+Android build has finished and the artifacts have been copied to where they need to go with SBOMs created.

#Python #Python314 #release

The Windows build on Azure Pipelines. Lots of boxes for each of "build binaries", "sign binaries", "generate layouts", "pack", "test" and finally "publish". So far nearing the end of the build binaries stage.

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The Windows build is ready and macOS is underway.

#Python #Python314 #release

Terminal prompt showing the output of run_release.py with lots of checked tasks and ending with:
Waiting for files: Linux ✅ Windows ✅ Mac ❌

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macOS installer done, next on the final publishing and announcing steps.

#Python #Python314 #release

Terminal showing:
✅ Wait until all files are ready
Go to https://www.python.org/admin/downloads/release/add/ and create a new release
Have you already created a new release for 3.14.0?
Enter yes or no:

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76d

🚀 It's out!

🥧 Please install and enjoy Python 3.14!

https://discuss.python.org/t/python-3-14-0-final-is-here/104210?u=hugovk

#Python #Python314 #release

Two snakes enjoying a pie with 3.14 on the top and π crimping.

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And the last few tasks: announce also on the blog & mailing lists, update the PEP & downloads landing page, fix Discourse post links, unlock the 3.14 branch for the core team to start landing PRs that didn't need to be in the RC, and eat the pie.

https://blog.python.org/2025/10/python-3140-final-is-here.html

https://mail.python.org/archives/list/python-list@python.org/thread/UDOUFTTWDO7IXHLPQSHTEW2FWGF7ZY2C/

https://www.python.org/downloads/

https://peps.python.org/pep-0745/

A HUGE thanks to @sovtechfund Fellowship for allowing me to dedicate my time on getting this out 🎉

https://hugovk.dev/blog/2025/im-excited-to-join-the-sovereign-tech-fellowship/

#Python #Python314 #release

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