Ruff is reshaping how Python projects lint and format

Ruff is a Rust-based linter and formatter that runs fast enough to feel instant, even on large codebases.

One tool, many checks

It re-implements rules from a long list of established linters, so a single dependency can replace much of the old lint/format stack.

Getting started

ruff check .      # lint
ruff format .     # format

Configure it in pyproject.toml, enable the rule sets you care about, and wire it into pre-commit or CI. The speed makes it practical to run on every save.