Project Radar · Code Quality

astral-sh/ruff

10-100x faster linter and formatter that unifies Flake8, Black, isort, and pyupgrade rules in a single configuration.

stableAI familiarity: highMITFirst seen 2026-09-02Reviewed 2026-09-02
Why it matters10-100x faster linter and formatter that unifies Flake8, Black, isort, and pyupgrade rules in a single configuration.
When not to use itWhen a project depends on plugin ecosystems (e.g. Flake8 plugins) that have no Ruff equivalent yet.
Risk noteDrop-in Black compatibility; rare syntax-parsing differences surface on unusual code bases.

Evidence

What the review checked

Last release: Active release train; verified against the repository releases page at review time.

Release cadence: Frequent releases with annotated changelogs.

Maintenance: Actively maintained by Astral; broad adoption across major projects.

License: MIT

Alternatives considered: flake8, black, isort, pylint

The AI-era grade

AI familiarity: high

Mainstream models reliably produce current-API code for this project. Normal code review still applies.

This grade is the maintainer’s dated judgment about mainstream model training data — not a benchmark result. Re-graded on major releases. The grading rules live in the repository’s curation policy.