astral-sh/ruff

An extremely fast Python linter and code formatter, written in Rust. Linting the CPython codebase from scratch. ⚡️ 10-100x faster than existing linters (like Flake8) and formatters (like Black) 🐍 Installable via pip 🛠️ pyproject.toml support 🤝 Python 3.15 compatibility ⚖️ Drop-in parity with Flake8, isort, and Black 📦 Built-in caching, to avoid re-analyzing unchanged files 🔧 Fix support, for automatic error correction (e.g., automatically remove unused imports) 📏 Over 900 built-in rules, with native re-implementations of popular Flake8 plugins, like flake8-bugbear ⌨️ First-party editor i…