Notices by Hugo van Kemenade (hugovk@mastodon.social)

The day before feature freeze, the CPython team is busy reviewing last minute PRs, but today's latest #GitHub outage is eating review comments.

We are resorting to pasting screenshots of reviews around in PRs and DMs.

https://github.com/python/cpython/pull/148827/#issuecomment-4390256894

Three days until release and a bug in the Linux kernel has turned a dozen buildbots red...

It's already been fixed in the kernel, but will take some time to bubble up. We'll skip that test for relevant kernel versions in the meantime.

https://buildbot.python.org/#/release_status
#Python #Python314

Only one week left until the release of Python 3.14.0 final!

https://docs.python.org/3.14/whatsnew/3.14.html

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

What are you looking forward to?

#Python #Python314

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

And back to green!
#Python #Python314

(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

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

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

#Python #Python314 #release

The Windows build is ready and macOS is underway.

#Python #Python314 #release

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

🚀 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

🐍🏃➡️ We kicked off the first day of the #Python #CoreSprint at #Arm in #Cambridge with lots of talks and lots of discussion about talks!

Ken Jin - Building a JIT Community AND Demo [effect] of new C API
@antocuni - Tracing JITs on real code
@brettcannon - WASI update AND precompiled binaries from python.org
Hood Chatham - Upstreaming Pyodide FFI
@freakboy3742 - Managing cross-platform wheel builds
Steering Council - PEP 793 and abi3/abi3t/abi4
Matthew Parkinson - Designing Deep Immutability

🐍🏃➡️🏃➡️🏃➡️ #Python #CoreSprint day 3!

Lightning talks:

⚡ Guido van Rossum on collecting an aural history
⚡ @EWDurbin on modernising the last bits of infra and bots
⚡ Steve Dower demoed the new Windows installer
⚡ Larry Hastings on a linked_list date type
⚡ Adam Turner asks shall we close old issues
⚡ @gpshead shared a draft PEP for timestamps on async tracebacks

@willingc, Adam, @Yhg1s, @erlendaasland and I discussed a number of docs topics

I released the docs theme with more translations

SC Q&A

🐍🏃➡️🏃➡️ #Python #CoreSprint day 2!

@trallard gave a presentation about the different types of mentorship and how we can improve in CPython, followed by discussion

@gpshead gave demo on tools like Claude

Tania, @jezdez, @willingc and I discussed about the User Success WG and we came up with some ideas on next steps

We ended the day with punting on the Cam and dinner at Jesus College, thank you, Arm!

@Yhg1s gave a fun session of his Feuding Pythonistas (spoiler: people are wrong on the internet)

🐍🏃➡️🏃➡️🏃➡️🏃➡️ #Python #CoreSprint day 4!

Finally, time for the 3.14.0rc3 release: originally planned for Tuesday, moved to Wednesday to better fit the schedule, moved to Thursday to give the SC an extra day to decide on a potential revert. Next RM @savannah.dev joined in to watch the process and ask questions. 🥧

Then a quick core․py recording with Pablo and @ambv before heading up to Manchester for #PyConUK! 🐝

Thanks again to Diego Russo and Arm for hosting us! 🦾

@KevinMarks @Kensan @shortridge Which bit of Python assumes mm/dd/YYYY unless mm>12?

@KevinMarks @Kensan @shortridge That's quite the gotcha!

Well, if you're not using ISO dates, and don't tell it what format is being used, this library has to make some sort of guess between mm/dd/YYYY and dd/mm/YYYY.

And iirc you have to tell the standard library which date format to parse, it won't guess.

@webology @brettcannon @pauleveritt
There's a branch you can build today:
https://peps.python.org/pep-0750/#reference-implementation

Otherwise it should be in the first 3.14 beta in just under a month and the full release in October.

Open science people: @willingc is building a "curated list of organizations and resources that foster inclusive collaboration in open science".

If you can help out with active pages or Wayback Machine archives, add some links to:

https://github.com/willingc/awesome-inclusion-open-science
#OpenScience #science

Congratulations to @ThePSF's new Fellows! 🎈🐍🎉

👏 Artur Czepiel

👏 @kjaymiller

👏 @kojoidrissa

👏 @treyhunner

https://pyfound.blogspot.com/2024/12/announcing-python-software-foundation.html

Do you know someone deserving of Fellowship? It only takes an email to nominate, see https://www.python.org/psf/fellows/ for details!

#Python #PSF #PSFFellows