Failed comedian, Python core developer, co-host of the https://xitter.cf/t.co/7PoInheICG podcast. Python guy at Meta. Previously CPython Dev in Rez at the Python Software Foundation.
Vancouver, British Columbia
Joined June 2009
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Why are people leaving X? Well, you should, too. Here's a well-researched summary why.
youtu.be/GZ5XN_mJE8Y
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:
surveymonkey.com/r/python_ty…
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/schedule/p…
#pycon #pyconus2026 #python
Łukasz Langa retweeted
There's a new episode of the core․py podcast! 🎙️This time we're talking to the newest member of the #python committer team, Savannah Ostrowski 🐍
open.spotify.com/show/1PGRfd…
It's a little embarrassing to have to ask friends for help, but since I can't do it myself, I'd like to ask y'all to please take out the garbage today 🤞🏻🤞🏻
Łukasz Langa retweeted
My favorite music/math video ever: When you speed up a 3-against-2 polyrhythm, it becomes a perfect 5th interval, because the ratio between the two frequencies of a perfect fifth is 3:2.
🎙️In the latest episode of the core․py podcast we dive deep into #Python's memory allocation. This will help us cover reference counting and garbage collection in the future.
♦️This time, we're focusing on pymalloc, The Sims, and YAML.
podcasters.spotify.com/pod/s…
This was a fun one, talking not only about the newest #Python 3.13, but also about what makes the language tick and where it might go in the future. Thanks for having me!
Łukasz Langa is the CPython Developer in Residence at the Python Software Foundation. He joins the show with @seanfalconer to talk about the latest Python release.
@ThePSF @llanga
softwareengineeringdaily.com…
Łukasz Langa retweeted
Python 3.14's first alpha release came out the other day, and has just made it onto the Windows Store. It's unlisted, but if you'd like it, it's at microsoft.com/store/apps/9NT…
Also, we updated our signing certificate, so it's now issued by Azure Trusted Signing and not DigiCert.
Łukasz Langa retweeted
What you would like to listen to in the next episode of core.py ⚛️🐍 (podcasters.spotify.com/pod/s…)? 🤔
37%The garbage collector
27%Memory management
18%fstring changes in 3.12
18%Symbol tables
60 votes • Final results Łukasz Langa retweeted
You can now install free-threaded Python builds with uv:
uv python install 3.13t
ALT Running `uv python install 3.13t`
Łukasz Langa retweeted
“WordPress is in the top 1% of open source projects in terms of impact, success, and financial return for its creator. Yet despite that […] its creator suffers from the same fate as many small Open Source libraries: a feeling of being wronged.” lucumr.pocoo.org/2024/10/14/…
Łukasz Langa retweeted
Curious about free-threaded CPython in Python 3.13? 🤔
Check out the initial insights from @llanga and @ixek in their Python 3.13 overview! Got questions? Drop them in the thread below and let's dive into the future of Python together! 🚀🐍
📽️ youtube.com/live/GPwYSf1t8Lw…
Hard to believe! Black, your friendly #Python code auto-formatter was downloaded over a ✨billion times✨ from PyPI 📈
Thank you very much for your support and trust 🖤
And thanks to Jelle, Shantanu, and Cooper for being awesome maintainers! 👑
ALT Screenshot from pepy.tech/projects/black showing Black being dowloaded 1,000,096,614 times.
Łukasz Langa retweeted
🐍🇺🇬 Live from @pyconuganda
@llanga is sharing invaluable insights into Python's inner workings, covering:
Secrets for managing major releases
Behind the scenes of Python 3.8 & 3.9
The inception of Black and its impact on code formatting
#PyConUganda2024 #BuildWithAT – at Kampala, Uganda
Łukasz Langa retweeted
As a Python library developer, what features we can use is constrained by the lower bound of versions supported, so dropping 3.8 brings some nice goodies to use:
* pipe syntax for combining dicts `x | y`
* type hints with standard collections: `list[str]`
* using zoneinfo instead of pytz
Anything else big I'm missing?