Rust-powered Python linter and formatter. 10-100x faster than Flake8 + Black combined. 800+ lint rules, auto-fix, import sorting, and format-on-save.
This block should tell both the user and the agent what to copy, install, and apply first.
pip install ruff
# Lint
ruff check .
# Format
ruff format .
# Fix auto-fixable issues
ruff check --fix .Ruff is an extremely fast Python linter and code formatter written in Rust. It replaces Flake8, Black, isort, pycodestyle, pydocstyle, and dozens more tools — in a single binary that runs 10-100x faster.
Best for: Any Python project — linting, formatting, import sorting Works with: VS Code, PyCharm, Neovim, CI/CD, pre-commit hooks
pyproject.toml# pyproject.toml
[tool.ruff]
line-length = 88
target-version = "py312"
[tool.ruff.lint]
select = ["E", "F", "I", "N", "UP"]Created by Astral. Licensed under MIT. astral-sh/ruff — 35K+ GitHub stars
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