Łukasz Langa

I went to see Nathan Fiedler's "You Can See Everything" documentary on Elizabeth Holmes tonight and omfg I didn't expect a nearly 3h long documentary to be SO GRIPPING. This shit was more engaging and unnerving than the entire last season of "Severance" combined! www.imdb.com/title/tt4536...

You can help shape the future of #Python typing with the power of having an opinion! Fill out the annual Python Type System and Tooling Survey: www.surveymonkey.com/r/python_typ...

We have a unique keynote this year: Guido van Rossum - the creator of Python - will be the guest on an episode of the core.py podcast, recorded live from the #EuroPython stage by @lukasz.langa.pl and @pablogsal.com Grab your ticket: ep2026.europython.eu/tickets/ #europython #python

Look, last-minute Łukasz at #pyconus reporting here that there is a last-minute talk on Sunday at 2:30pm worth attending! PEP 810 co-author Brittany Reynoso will be talking about lazy imports! us.pycon.org/2026/schedul... #pycon #pyconus2026 #python

Are you going to #PyConUS? Have you booked in our hotel block? New on the blog, some hard numbers & why we’re in a tight spot. We only have until April 24th to turn the tide, so please read, share, and book your PyCon US stay in the official block today.

Nearly 5 years, countless PRs, a program grown from 1 to 5. Thank you, Łukasz Langa, for defining the CPython Developer in Residence role. Best of luck on the next step of your journey and we'll see you around the community!

Core Dispatch #1 New releases are slated to drop on Monday: 3.13.13, 3.14.4, and 3.15.0a8. PEP 803 got accepted, so free-threaded builds will have a stable ABI. Ken Jin also wrote up what's going on with the JIT in 3.15. coredispatch.xyz/editions/1

This (not very) Polish girl is going to Kraków! My talk about the very coolest feature in Python 3.14, sys.remote_exec(), got accepted at @europython.eu! We'll be doing a deep dive on savannah.dev/posts/the-co...! Can't wait!

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...

The yin and yang of Łukasz’s keynote 😅 👏 @lukasz.langa.pl #PyCascades

Some big ideas in @lukasz.langa.pl's keynote at #PyCascades this morning

Thanks @fastly.com for taking some time to ask me questions and share my responses - it's quite unique to work on a system like this

Help us map out an accurate landscape of the Python community: respond to the official Python Developers Survey for 2026 to add your voice 🤩 #python #pythondevsurvey

Łukasz Langa is the CPython Developer in Residence at the Python Software Foundation. He joins @seanfalconer.bsky.social to discuss the 3.14 release, free threading, type improvements, Python’s role in AI, and maintaining backward compatibility. @lukasz.langa.pl bit.ly/45TTSkP

An interesting coincidence how @willmcgugan.bsky.social’s weight loss blog post comes just 2 weeks after my own! Clearly, it’s a topic on people’s minds. My account involves no injections, so you can treat it as an alternative approach. lukasz.langa.pl/b2217f47-631...

X is designed to radicalise people. The algorithm promotes Elon Musk's agenda to promote racists and people who want violence bought - specifically - to the streets of Britain. Members of Parliament, major institutions and the media should not be there. news.sky.com/story/the-x-...

The final release of Python 3.9 is out! discuss.python.org/t/the-final-... May you all enjoy using the features added in Python 3.10 if that's now your oldest version. 😁 docs.python.org/3/whatsnew/3...

Python 3.9 is officially EOL! Congratulations to @lukasz.langa.pl on a wonderful run as release manager! 🖤 discuss.python.org/t/the-final-...

Hearts at the PSF are full today from the responses about the recent grant turn down news we shared. All of your kind words of support & solidarity, as well as your donations & new memberships, mean the world to us. We're so grateful to be in community with each of you 💛🐍💙

TLDR; The PSF has made the decision to put our community and our shared diversity, equity, and inclusion values ahead of seeking $1.5M in new revenue. Please read and share. pyfound.blogspot.com/2025/10/NSF-... 🧵

🎙️ Bored this weekend? Part 2 of the interviews from the CPython core sprint in Cambridge UK is out. Don’t worry, it's shorter than Part 1. Only 2 hours 18 minutes! ✨ Hear from Greg, Thomas, Paul, Pradyun, Carol, Guido, Brett, Erlend, Tal, Lys, Yury, and Diego. creators.spotify.com/pod/profile/...

Please congratulate our newest PSF Fellow Members for Q3, 2025! Their continued contributions to the Python ecosystem are so very important to our community. #python

hot take: a big reason for the collective anxiety around free-threading is the result of decades of copium where we assured each other that it's good, actually, that #Python has a bad threading story, because threads are dAnGeRoUs and our feeble minds need protection

The core․py podcast is back with a new episode! Actually, it’s only half an episode, and yet it’s the longest one so far. We interviewed attendees sprinting on CPython at Arm Inc. Topics include: #Python 3.14 and 3.15, the future of free threading, and pizza. creators.spotify.com/pod/profile/...

🚀 Python 3.14 is out and so is 3.15 alpha! I chatted with @hugovk.dev, @pablogsal.com, and @lukasz.langa.pl about which release was the least successful, why release notes always say “and now for something completely different”, how Python actually gets released and many more! youtu.be/BHUWyM2cxwE

Python 3.14 is out! 🎉 What goes on behind the scenes before a new Python version reaches us? I had the chance to chat with @hugovk.dev, @lukasz.langa.pl, and @pablogsal.com about their experiences as release managers. Sneak peek: youtu.be/yc9lpM_zpes, full episode coming next week!

Let me post a *non*-subskeet for once... We made a thing! discuss.python.org/t/pep-810-ex... #Python #PEP

The CPython Core Dev Sprint 2025 in Cambridge is a wrap, the biggest and best yet! 🎉🐍 50+ core devs, Python 3.14rc2 released, Arm talks on ISA/compilers, and a true Cambridge experience! I’ve shared the full story (with photos) on LinkedIn 👉 www.linkedin.com/feed/update/...

Check out this blog post from PSF CPython Developer-in-Residence, @lukasz.langa.pl, about why sprints are a wonderful environment for productivity, learning, and community connection– and his favorite part of a conference! pyfound.blogspot.com/2025/09/spri...

Early morning run to catch the sunrise 🌞

Have you noticed? A new episode of the core․py podcast is out! This one is a little out there even for our standards, but it was a fun trip to go through all those PEPs and think “what if?” Also included: @pablogsal.com suffering some technical difficulties 🥸 creators.spotify.com/pod/profile/...

We've got an amazing speaker lined up at #Python #Edinburgh, on 9th September. @lukasz.langa.pl is going to be talking about WebGL and PyScript! www.meetup.com/python-edinb... #pythondev #programming

I just got awarded the PSF Community Service Award for Q2 of 2025! This is such an honour! I was at the grocery store when I received this email and I got so excited I could barely focus for long enough to pay for my groceries! I cannot express how overjoyed and honoured I am.

🎙️ Just published a new episode of Test & Code: 238: So Long, and Thanks for All the Fish. Have a listen:

We are delighted to announce that @lukasz.langa.pl, #Python superstar, is going to do a talk at the first #Aberdeen Python User Group after our summer break on 10th September. #APUG Don't miss this unique chance to learn from Lucasz! ti.to/code-the-cit... See you there!

You have about 24 hours left to submit a PSF Board nomination for yourself or someone else 🩵🐍💛 Be a part of shaping the future of the Python and PSF community- get those nominations in by tomorrow, Tuesday, August 12th, 2:00 pm UTC!

Python 3.13.6 has been released: "3.13.6 is the sixth maintenance release of 3.13, containing around 200 bugfixes, build improvements and documentation changes since 3.13.5." discuss.python.org/t/python-3-1... #Python313 #Python #CPython #release

Today I realized I’m going to be: – the 10th RM ever – the first Canadian RM, and – the first woman to serve in this role If you ask me, that’s all really, really cool.

Heads Up, #Python Developers! There is an active phishing attack targeting PyPI users. • Threat: Emails from noreply@pypj.org (with a 'j') link to a fake login page. • Action: Do not click any links. If you already did, change your PyPI password ASAP. • Note: PyPI itself has not been breached.

How well do you know Python’s f-strings? I built a thing inspired by JavaScript’s Date constructor quiz but for Python. fstrings.wtf

@pablogsal.com and I are in Prague for @europython.eu. Come talk to us about REPLs, parsers, profilers, and Sleep Tokens! 🤘🏻 And if you’re not here, there’s a new episode of the core․py podcast where we cover the new builtin sampling profiler for #Python 3.15 🏎️ creators.spotify.com/pod/profile/...

Almost 4 months later, here it finally is: uv: Making Python Local Workflows Fast and Boring in 2025 youtube.com/watch?v=TiBI... 1/3

Contribute, learn, collaborate! Join the Sprints on July 19–20 — two days of open-source hacking, project-based learning, and community teamwork. Watch Łukasz's @lukasz.langa.pl video to get inspired.

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

It was time to update the sticker wall on the laptop. New additions: xonsh, Yamaha (that should have been there from day 1), 2001, and Drive. And a much improved Challenger tile.

Thanks to the work of Python Release Managers and all the Developers-in-Residence we have a coordinated #Python #security release of all versions for 5 CVEs all in one day (1 critical, 3 high, 1 medium) discuss.python.org/t/python-3-1...

Everyone’s loving the avatars @pycon.us — so I had to make one for our amazing Devs-in-Residence @python.org too. This photo? Epic. @lukasz.langa.pl @miketheman.com @sethmlarson.dev #PyConUS #pycon2025

Just released: Python 3.14.0 beta 2! 🚀🐍 🥧 Deferred type annotation evaluation! 🥧 T-strings! 🥧 Zstandard! 🥧 Syntax highlighting in the REPL! 🥧 Colour in unittest, argparse, json and calendar CLIs! 🥧 UUID v6-8! 🥧 And much more! discuss.python.org/t/python-3-1... #Python #CPython #Python314 #release