ruff — Ruff is an extremely fast Python linter and code formatter written in Rust, designed to replace multiple tools like Flake8, Black, and isort with a single interface.

Ruff is an extremely fast Python linter and code formatter written in Rust, designed to replace multiple tools like Flake8, Black, and isort with a single interface.

About this project

Ruff is a high-performance Python linting and formatting tool implemented in Rust. It aims to provide a unified interface that replaces several popular tools, including Flake8, Black, isort, pydocstyle, pyupgrade, and autoflake. Key capabilities include: - Linter and Formatter: Provides both code analysis (linting) and automatic code formatting. - Extensive Rule Set: Supports over 900 built-in rules, including native re-implementations of many Flake8 plugins (e.g., flake8-bugbear). - Performance: Designed for extreme speed, utilizing built-in caching to avoid re-analyzing unchanged files. - Automatic Fixing: Supports the `--fix` flag to automatically correct specific linting errors, such as removing unused imports. - Integration: Offers first-party extensions for VS Code and supports integration as a pre-commit hook or GitHub Action. - Configuration: Compatible with `pyproject.toml`, `ruff.toml`, and `.ruff.toml` for hierarchical and cascading configuration. - Compatibility: Supports Python 3.14 and provides drop-in parity with Black, isort, and Flake8.