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Łukasz Langa

@lukasz.langa.pl

CPython Developer in Residence, Python 3.8 and 3.9 release manager. Gradual typing enthusiast, asynchronous programming proponent, creator of the auto-formatter Black. He produces electronic music, which includes software and hardware of his own making.

137 Posts3778 Follower126 Folgt
Łukasz Langa@lukasz.langa.pl · 3mo ago

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

Lazy imports and the art of interpreter procrastination

From CLI developers to maintainers of large applications, many Python developers have been bitten by the high overhead of eagerly … Presented by: Brittany Reynoso

us.pycon.org

Python Software Foundation@python.org · 4mo ago

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!

Reflecting on Five Years as the PSF’s First CPython Developer in Residence

After nearly five wonderful years at the Python Software Foundation as the inaugural CPython Developer in Residence, it's time for me to move on. I feel honored and honestly so lucky to have had the opportunity to kick off the program that now includes several wonderful full-time engineers. I'm glad to see the program left in good hands. The vacancy created by my departure will be filled after PyCon US as the PSF is currently focused on delivering a strong event. I'm happy to share that Meta will continue to sponsor the CPython Developer in Residence role at least through mid-2027. The program is safe.

pyfound.blogspot.com

Donghee Na@corona10.bsky.social · 4mo ago

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...

PEP 803: Stable ABI for Free-Threaded Builds (packaging thread)

Hi @encukou , On behalf of the Steering Council, I am happy to share that PEP 803 has been approved. Congratulations, and thank you for your work on this PEP. We are particularly pleased to see this...

discuss.python.org

Mike Fiedler@miketheman.com · 5mo ago

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

Python Package Index@pypi.org · 5mo ago

Huge thanks to @fastly.com for 10+ years of keeping #PyPI up and running! PyPI serves 800K+ users at ~100K requests/sec. With a small team behind the service, that kind of scale is only possible because of infrastructure partners who invest in the sustainability of the #Python ecosystem.

Software Engineering Daily@softwaredaily.bsky.social · 6mo ago

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

Python 3.14 with Łukasz Langa - Software Engineering Daily

Python 3.14 is here and continues Python’s evolution toward greater performance, scalability, and usability. The new release formally supports free-threaded, no-GIL mode, introduces template string li...

bit.ly

Łukasz Langa@lukasz.langa.pl · 9mo ago

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...

Losing weight is easy, I've done it lots of times! - Łukasz Langa

Wait, what? Yeah, I’ve done a few big diet runs in the past and regained lost weight, and then some. This April I started again, but did it better. I lost 19 kilograms in four months. I reached that p...

lukasz.langa.pl

Brett Cannon@snarky.ca · 9mo ago

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...

The final Python 3.9 security fix release is out!

Python 3.9.25 is available now! If you’re still using that, grab the sources and build the update as there’s some final fixes: Security content (low severity) There are no CVEs for those, and so ot...

discuss.python.org

Python Software Foundation@python.org · 9mo ago

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 💛🐍💙

Python Software Foundation@python.org · 9mo ago

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-... 🧵

Łukasz Langa@lukasz.langa.pl · 9mo ago

🎙️ 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/...

Episode 26.2: CPython Sprint Week in Cambridge UK, Part 2 by core.py

More interviews from the core sprint! This time we have: Greg P. Smith, Thomas Wouters, Paul Ganssle, Pradyun Gedam, Carol Willing, Guido van Rossum, Brett Cannon, Erlend Aasland, Tal Einat, Lysandros...

creators.spotify.com

Hynek Schlawack@hynek.me · 10mo ago

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

Łukasz Langa@lukasz.langa.pl · 10mo ago

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/...

Episode 26.1: CPython Sprint Week in Cambridge UK, Part 1 by core.py

What? What do you mean this two-and-a-half hour episode is PART 1? Well, there were fifty people at the sprint in September. We interviewed thirty of them. In Part 1 you can hear from 18 of them: Ken ...

creators.spotify.com