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Keeping your projects nice and clean — Jan Musílek
Learn best practices for maintaining clean Python projects using autoformatters, code checks, and CI tools. Tips for efficient development and team collaboration.
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Use autoformatters to maintain consistent code style and save cognitive effort
- Don’t waste time arguing about specific formatting - let tools handle it
- Code review improves code quality and serves as bidirectional mentorship between junior and senior developers
- Set up continuous integration to enforce code quality checks
- Use pre-commit hooks to catch issues before code reaches the server
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Key tools recommended:
- Black or Ruff for autoformatting
- Flake8 for linting
- Bandit for security checks
- Pydoc style for docstring formatting
- MyPy for type checking
- Keep tool configurations simple - start with defaults and build up gradually
- Store project configuration in pyproject.toml
- Automate manual tasks where possible
- Don’t run formatting in CI - do it locally during development
- Maintain consistency across projects to improve collaboration
- Consider “bus factor” - ensure multiple team members can maintain the codebase
- Keep dependencies and tools up to date but pin versions to avoid breaking changes
- Use tools that provide autofix capabilities to save time on manual corrections