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

Ruff is a Python linter and code formatter written in Rust, designed to be significantly faster than existing Python-based tools like Flake8 and Black. It integrates the functionality of multiple linters (Flake8, isort, pydocstyle, pyupgrade, autoflake) and formatters (Black) into a single tool, reducing the overhead of managing multiple dependencies. Ruff leverages Rust's performance characteristics to achieve speeds 10-100x faster than traditional Python linters. It supports pyproject.toml configuration, Python 3.14 compatibility, and built-in caching to avoid re-analyzing unchanged files. The tool also offers fix support for automatic error correction, making it easier to maintain code quality and consistency. It's used by major open-source projects like Apache Airflow, FastAPI, and Pandas, indicating its reliability and effectiveness in large codebases.
Ruff is a Python linter and code formatter written in Rust, designed to be significantly faster than existing Python-based tools like Flake8 and Black.
Explore all tools that specialize in enforce coding standards. This domain focus ensures Ruff delivers optimized results for this specific requirement.
Explore all tools that specialize in automatic error correction. This domain focus ensures Ruff delivers optimized results for this specific requirement.
Written in Rust, Ruff achieves speeds 10-100x faster than Python-based linters and formatters.
Ruff integrates multiple tools like Flake8, Black, isort, and more into a single interface.
Ruff provides fix support to automatically correct errors, such as removing unused imports.
Supports hierarchical and cascading configuration for monorepo setups.
Over 800 built-in rules, with native reimplementations of popular Flake8 plugins.
Install Ruff using pip, uv, or pipx: `pip install ruff`
Configure Ruff via pyproject.toml, ruff.toml, or .ruff.toml.
Run Ruff as a linter: `ruff check`
Run Ruff as a formatter: `ruff format`
Integrate Ruff into your editor (VS Code, etc.) using the appropriate extension.
Set up Ruff as a pre-commit hook to automatically lint and format code before commits.
Utilize Ruff in CI/CD pipelines by incorporating ruff-action in GitHub Actions or similar.
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"Ruff is praised for its speed, ease of use, and comprehensive rule set, making it a valuable tool for Python developers."
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