My EuroPython 2026 Language Summit topic has been accepted! 🎉 Looks like I’ll be quite busy preparing over the next few weeks😅 See you at EuroPython 2026! 🚀 ep2026.europython.eu/language-sum...

The Steering Council keynote at #PyConUS is Sunday and we are soliciting questions to answer during our talk! If you have a fun question for us, drop it in the form: bit.ly/pysc-2026 Sky’s the limit! Ask away folks!!

There have been multiple supply chain attacks in the Python ecosystem recently. The Karrot Python chapter shared a blog post on how we responded internally 🙂 medium.com/daangn/how-w...

Just released debugwand v0.5.0, now with Podman support! Thanks @corona10.bsky.social! 🎉 pypi.org/project/debu...

blog.python.org/2026/03/jit-... Without Ken Jin’s mentorship, I would not have been able to integrate frozendict into the Python 3.15 JIT infrastructure so smoothly. In CPython’s JIT, frozendict can currently be constant folded when used as a global variable.

Happy to share that PEP 803 has been accepted. A meaningful step toward Stable ABI for free threading in Python 3.15, with clear importance for C extension support. discuss.python.org/t/pep-803-st...

Perfetto is pretty neat railsatscale.com/2026-03-27-u...

I was planning to focus on open source work after finishing my company work today, but I ended up spending time on an unexpected CVE instead.

Something like "open"uv… soon?

If in a few years no humans are writing code anymore, then this might be the last moment we truly get to enjoy it. So enjoy it fully and appreciate the present, so you won’t look back with regret in the future.

I am very happy to share that PEP 814 is accepted. Huge kudos to @vstinner.bsky.social for driving this PEP from the start! discuss.python.org/t/pep-814-ad...

Coming soon to Python 3.15: frozendict The Steering Council has just accepted @vstinner.bsky.social and @corona10.bsky.social's PEP 814 "Add frozendict built-in type". discuss.python.org/t/pep-814-ad... peps.python.org/pep-0814/ #Python #PEP814 #frozendict #Python315

Stoked to share that the Steering Council has accepted PEP 814. frozendict is coming to Python 3.15! discuss.python.org/t/pep-814-ad...

The annual meeting summaries for the 2025 Python Steering Council have been published. discuss.python.org/t/2025-psc-m...

As of Python 3.15, you can also annotate mmap calls made from pure Python code using the mmap.set_name() method. github.com/python/cpyth...

Oh please, just don’t launch the new model at dawn in Korea… 😂

2025년에 이어 2026년에도 파이썬 운영위원회 (Python Steering Council ) 멤버로 활동하게 되었습니다. 파이썬 코어팀이 올해 집중해오던 프로젝트들의 모멘텀을 계속 유지하기 위해서 노력하겠습니다.

I am very happy to continue serving as a member of the Python Steering Council next year as well. As I mentioned in my self-nomination, I will work to maintain and build on the momentum that the Python core team has driven this year. peps.python.org/pep-8107/

Congratulations to the new #Python #SteeringCouncil! 🗳️ @pumpichank.bsky.social 🗳️ @corona10.bsky.social 🗳️ @pablogsal.com 🗳️ @savannah.dev 🗳️ @yhg1s.bsky.social discuss.python.org/t/steering-c... Welcome Savannah & thank you to @gpshead.bsky.social for your service! hugovk.github.io/python-steer...

I’m looking forward to working alongside my fellow council members to serve the community, support contributors, and help guide Python over the next year. Congratulations @pablogsal.com @yhg1s.bsky.social @pumpichank.bsky.social @corona10.bsky.social! 🎉

github.com/python/cpyth... Starting in Python 3.15, anonymous mmap usage will be annotated on Linux (kernel version >= 5.17) when the interpreter is launched with -X dev. Annotated names are shown in /proc/<pid>/maps, which can help with debugging :)

얼마 전에 나온 파이썬 다큐맨터리에 한국어 자막이 추가가 되었습니다. 아직까지는 유일한 수동 번역된 비영어 자막입니다. 이 작업을 위해 노력해주신 @pycon.kr 분들께 감사를 드립니다!

www.youtube.com/watch?v=GfH4... Very proud that official Korean subtitles is added to “Python: The Documentary” thanks to the amazing effort from @pycon.kr It’s the only non-English language with manually created subtitles, not auto-generated.

Going to report a bug literally any Python project on GitHub to find @hugovk.dev already got there before you, reported it and fixed it. Every time.

Most of my recent OSS contributions are connected to projects at my company, even if the contributions are small or simple. So I still believe the best way to start contributing to open source is by working on, or aligning with, your day-to-day projects :)

Sometimes it is good to try to keep a distance from the topic that I am biased on

During the CPython core sprint, I was glad to close the issue by fixing it so that the JIT can now pass unittests without any optimizations(no-opt). This will be the basic step to make the JIT compatible with free-threading. github.com/python/cpyth...

I hope we can have more CPython sprints happening across various regions! pyfound.blogspot.com/2025/09/spri...

It’s been a while, but I finally had a full day at work to spend on open source. Happy to dig into some long-pending CPython issues, especially since most of my days lately are just paperwork.

Hopefully no more paper works after next month

Yesterday I joined @bernsteinbear.com for live debugging for my stuck PR on his JIT project, and it was an outstanding experience. Learning directly from people like him is priceless, and I truly hope more mentors like this can have greater impact in the community.

I got a new t-shirt :)

Just a bit more... and I might escape the paperwork by the end of this month.

The Steering Council has updated one paragraph of its earlier announcement to clarify terminology. See: discuss.python.org/t/pep-779-cr...

Had a great time with @corona10.bsky.social today!

I met Max Bernstein today, an expert in Python (Cinder, Skybison) and Ruby JIT (ZJIT). We had a fascinating conversation about JIT compilation in both Ruby and Python while walking around a historic palace in Korea.

I've updated my Python 3.14 post with the new additions in 3.14.0b3: free-threading is no longer experimental, and concurrent.interpreters has been added! I've added a couple of examples: iscinumpy.dev/post/python-...

Just released: Python 3.14.0 beta 3! 🚀🐍 🥧 Exceptionally new in b3: 🥧 Free-threaded Python is officially supported! (PEP 779) 🥧 Subinterpreters in the stdlib! (PEP 734) Do you maintain a Python package? Please test 3.14. discuss.python.org/t/python-3-1... #Python #CPython #Python314 #release

The Python Elasticsearch client works too. I tested it back in December: discuss.elastic.co/t/dec-4th-20...

While it took much deliberation, it’s decisions like this, and the process leading to it, that make serving on the SC so rewarding. Once again I’m honored to serve with these five fine folks.

This announcement comes after several weeks of thoughtful discussion among the SC members. I’d also like to acknowledge and thank my fellow council members, @pumpichank.bsky.social, @gpshead.bsky.social, @pablogsal.com and @emilyemorehouse.bsky.social for their hard work throughout this process.

Exciting news! PEP 779 ("Criteria for supported status for free-threaded Python") has been accepted, which means free-threaded Python is now a supported build! We'll drop the "experimental" label already in 3.14 beta 3, due on Tuesday! #PEP779 #Python #Python314 #FreeThreaded

The Python Steering Council is pleased to announce that the Free-Threading project is no longer considered experimental! discuss.python.org/t/pep-779-cr...

About UN open-source week: www.sovereign.tech/news/maintai...

I feel like I've become grumpy man :(

Just published the blog posts for the #Python Language Summit 2025. It's quite fun to cover this important event and contribute to the Python community in this unique way :) Please take a look if you weren't able to attend the Language Summit in person: discuss.python.org/t/announcing...

Thanks to funding from @python.org , we’ve been able to keep working on this! @lysnikolaou.com and I have optimized a lot of the infrastructure, and now the status page can be updated daily. We’re also planning to provide more and better information soon :)

Oh look, #PyConUS videos are beginning to appear on YouTube, starting with the sponsor presentations. Here's Sam Gross's talk about Free-threaded Python (as well as Neil Mitchell on Pyrefly): youtu.be/ZTSZ1OCUaeQ?...

I am very proud to share the news that PSF has decided to sponsor the ft-checker.com website. We will continue to enhance the project for the successful landing of the free-threading CPython project!

There were layoffs at MS yesterday and 3 #Python core devs from the Faster CPython team were caught in them. If you know of any jobs, please send them their way: Eric Snow: www.linkedin.com/in/ericsnowc... Irit Katriel: www.linkedin.com/in/irit-katr... Mark Shannon: www.linkedin.com/in/mark-shan...