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Ruff: A Fast Python Linter and Formatter Written in Rust — November 6, 2026

•2 min read

Discover Ruff, a high-performance Python linter and code formatter written in Rust that offers significant speed improvements over traditional tools.

Ruff: Python Linting Gets a Speed Boost

If you're working with Python, you've probably wrestled with linters and formatters. ruff is trending because it offers a significant speed improvement over existing tools like Flake8, isort, and Black. It's written in Rust, which is a big part of its performance advantage.

This is for any Python developer who's tired of slow linting cycles, especially in larger projects. If you value quick feedback on your code quality and style, ruff is worth investigating. It feels mature enough for production use, which is impressive given how often these kinds of tools lag behind their older, slower counterparts.

Why Ruff is Gaining Traction

The main driver here is speed. Developers are increasingly dealing with massive codebases, and every second saved in the development cycle adds up. astral-sh/ruff claims to be significantly faster than the established Python linting and formatting tools. This isn't just a minor optimization; it's a noticeable difference that can improve developer workflow. Plus, consolidating multiple tools into one (linting and formatting) is always a win for simplicity.

Who Should Be Looking at Ruff?

  • Large Python Projects: If your CI/CD pipeline or local development workflow involves lengthy linting processes, ruff could drastically reduce that time.
  • Teams with Strict Style Guides: The formatting aspect means you can enforce consistency with a tool that's also fast.
  • Anyone Dissatisfied with Existing Tools: If you find Black too opinionated or Flake8 slow, ruff offers a compelling alternative.

Final Thoughts

ruff is a strong contender in the Python developer tool ecosystem. Its speed and consolidated functionality make it a practical choice for many. It’s already garnered a substantial number of stars, indicating a real demand for faster, more efficient code quality tools.

The astral-sh/ruff repository, which offers an extremely fast Python linter and code formatter written in Rust, has reached 50,491 stars.