---
id: ruff
version: "0.16.3"
license: MIT
license_treatment: permissive
maintenance: active
---

# ruff — An extremely fast Python linter and code formatter, written in Rust.

License: permissive · Maintenance: active · Popularity: top 1,000 on PyPI

## Install

pip install ruff
uv add ruff
poetry add ruff

## Description

<!-- Begin section: Overview -->

# Ruff

[![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
[![image](https://img.shields.io/pypi/v/ruff.svg)](https://pypi.python.org/pypi/ruff)
[![image](https://img.shields.io/pypi/l/ruff.svg)](https://github.com/astral-sh/ruff/blob/main/LICENSE)
[![image](https://img.shields.io/pypi/pyversions/ruff.svg)](https://pypi.python.org/pypi/ruff)
[![Actions status](https://github.com/astral-sh/ruff/workflows/CI/badge.svg)](https://github.com/astral-sh/ruff/actions)
[![Discord](https://img.shields.io/badge/Discord-%235865F2.svg?logo=discord&logoColor=white)](https://discord.com/invite/astral-sh)

[**Docs**](https://docs.astral.sh/ruff/) | [**Playground**](https://play.ruff.rs/)

An extremely fast Python linter and code formatter, written in Rust.

<p align="center">
  <img alt="Shows a bar chart with benchmark results." src="https://user-images.githubusercontent.com/1309177/232603516-4fb4892d-585c-4b20-b810-3db9161831e4.svg">
</p>

<p align="center">
  <i>Linting the CPython codebase from scratch.</i>
</p>

- ⚡️ 10-100x faster than existing...

## AI interpretation — verify before relying

Ruff is an extremely fast Python linter and code formatter written in Rust, combining the functionality of Flake8, Black, isort, and other tools into a single unified interface.

Verdict: Ruff is a production-ready, actively maintained linter and formatter with zero dependencies, broad platform support, and MIT licensing. Its adoption by major open-source projects and active development make it a low-friction replacement for multiple legacy tools.

[View on SkillFed](https://skillfed.io/packages/ruff) · [View on PyPI](https://pypi.org/project/ruff/)