black

Tech stack & purpose

Black is an uncompromising Python code formatter that automatically reformats entire files according to a strict, opinionated style based on PEP 8. It is built in Python and requires Python 3.10 or later to run, with optional support for formatting Jupyter Notebooks. The tool's primary goal is to eliminate time spent on formatting decisions by producing deterministic, consistent output across projects, while also enabling faster code reviews through minimal diffs. Black is maintained by the Python Software Foundation and is widely adopted by major organizations including Dropbox, Mozilla, Lyft, and Tesla, as well as numerous open-source projects like Django, pytest, and pandas.

Community & reference links

• Chat on Discord
• PyCon 2019 talk

Languages

Contributors (top 30 of 554)

• Łukasz Langa372 commits
• Jelle Zijlstra203 commits
• 
  dependabot[bot]179 commits · 0 followers
• Richard Si131 commits
• 
  Shantanu108 commits · 1,026 followers
• Zsolt Dollenstein79 commits
• cobalt76 commits
• Cooper Lees73 commits
• Hugo van Kemenade38 commits
• GiGaGon36 commits
• Yilei "Dolee" Yang36 commits
• Felix Hildén25 commits
• Batuhan Taskaya24 commits
• sahvx655-wq23 commits
• Marco Edward Gorelli21 commits
• pre-commit-ci[bot]18 commits
• James Addison16 commits
• Bryan Bugyi15 commits
• 
  HugoPeters102414 commits · 25 followers
• Tushar Sadhwani12 commits
• Michael J. Sullivan12 commits
• Jon Dufresne11 commits
• Alex Waygood10 commits
• Henri Holopainen10 commits
• Anthony Sottile9 commits
• rdrll9 commits
• Joe Young9 commits
• Pedro Mezacasa Muller8 commits
• Nipunn Koorapati8 commits
• Sagi Shadur7 commits