Łukasz Langa
CPython Developer In Residence
Greater Poland Voivodeship
Summary
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Rockstar
Top expert inComprehensive Python Ecosystem DevelopmentPython Ecosystem Development and Data Science
Łukasz Langa is a seasoned Python core developer and release manager with 16 years of experience, currently at Meta where he focuses on making Python scale across massive platforms. He has driven multiple Python releases (3.8, 3.9) and authored or co-authored several PEPs shaping the language, while serving as CPython Developer in Residence at the Python Software Foundation. His open-source footprint spans high-impact projects—flake8-bugbear, Black, mypy, typeshed and CPython itself—demonstrating deep expertise in tooling, typing, formatting and interpreter internals. Łukasz blends backend systems work (EdgeDB, Radicale) with release engineering and documentation, improving performance, type safety and developer experience. Outside of code he’s a hobbyist musician and dad, an uncommon humanizing detail that underscores his ability to balance creative and technical pursuits.
16 years of coding experience
11 years of employment as a software developer
Polish, English, German
Stackoverflow
31reputation
4kreached
2answers
0questions
Github Skills (67)
postgresql10
python10
compiler-development10
testing10
carddav10
linter10
type-inference10
type-check10
django10
stubs10
internationalization10
formatter10
implicit-typing10
formater10
optional-typing10
Programming languages (25)
Github contributions (5)
psf/black
Mar 2018 - Dec 2021
The uncompromising Python code formatter
Role in this project:
Back-end Developer
Back-end DeveloperContributions:24 reviews, 372 commits, 239 PRs in 3 years 9 months
Contributions summary:Łukasz contributed to the `psf/black` project, which is a Python code formatter. Their work primarily involved incorporating and managing the `Grammar.txt` file used for formatting Python code. They also fixed code formatting issues related to spacing in relative imports, parenthesized set expressions, unary expressions, and default arguments, improving the overall readability and consistency of the formatted code. They also enhanced the formatting related to features in Python 3.6+.
python-codepre-commit-hookpythongofmtcodeformatter
python/devguide
Mar 2012 - Nov 2022
The Python developer's guide
Role in this project:Technical Writer / Release Manager
Technical Writer / Release ManagerContributions:16 reviews, 10 commits, 51 PRs in 10 years 9 months
Contributions summary:Łukasz's contributions primarily revolve around maintaining and updating the Python developer's guide. They updated the documentation to reflect changes in Python versions, including end-of-life dates and release information. The user also contributed to documenting processes like auto-merging and core developer nomination, and also fixed various ReST formatting issues.
python-developerpython
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