Python Packaging

This covers the full lifecycle of turning your Python code into a proper distributable package. It walks you through modern tooling with pyproject.toml, setting up project structure, handling dependencies, creating wheels, and publishing to PyPI. Use it when you're moving beyond single scripts and need to share libraries or CLI tools with others. The skill includes a detailed implementation playbook, which is helpful since Python packaging has gone through several iterations and the current best practices around build backends and metadata aren't always obvious. It's focused specifically on the packaging mechanics, not on writing the actual Python code that goes inside.