psf/black
★ 41,948 stars
Covered in week 2026-W10 · the 2026-03 report
The uncompromising Python code formatter
What black is
Black is the uncompromising Python code formatter. By using it, you agree to cede control over minutiae of hand-formatting. In return, Black gives you speed, determinism, and freedom from pycodestyle nagging about formatting. You will save time and mental energy for more important matters.
From the repository README · read it on GitHub →
Transcript
18 Mar 2026 — 5 Python Repos That Do 80% Of The Heavy Lifting (And You Don't Use Them)
Tired of formatting debates with your team? Just run Black. This opinionated Python formatter reformats entire files instantly with zero configuration needed. No more bikeshedding over tabs, spaces, or style. Black is fast, deterministic, and trusted by over 41,000 developers including teams at Dropbox, Tesla, and Mozilla. Save hours of manual formatting and eliminate code review friction forever. Everyone follows the same style automatically. Star the repo at github.com/psf/black to learn more.