Ruff

Overview

Ruff is an extremely fast Python linter and formatter written in Rust. It replaces flake8, black, isort, pyupgrade, pydocstyle, and dozens more tools — running 10-100x faster. One tool for all Python code quality.

Instructions

Step 1: Setup

pip install ruff          # or: uv tool install ruff / pipx install ruff / brew install ruff
ruff --version            # checked against 0.16.10

For a one-off run without installing: uvx ruff check .. Pin the version in your project dependencies so local runs, pre-commit and CI agree.

Step 2: Configuration