Ruff

Ruff is a fast Python linter and code formatter. It enforces code style, catches common errors, and can automatically fix many issues. In this template, Ruff is run via pre-commit hooks and as a script:

hatch run lint
hatch run format

Configuration

Ruff settings are in the [tool.ruff] section of pyproject.toml. Adjust rules, exclusions, and formatting options as needed.

Further Reading

• Ruff documentation

• PEP 8 – Style Guide for Python Code

• Hatch curates a handy baseline for ruff configuration, which you can find in the ruff_defaults.toml file.

Alternatives

Other popular Python linters and formatters include:

• Flake8: Classic linter with plugin support.

• pylint: Highly configurable linter with code analysis.

• Black: Opinionated code formatter.

• isort: Sorts Python imports automatically.