Python Project Structure skill: what it does and how to install it

What it does. Guides new projects and reorganisations using focused modules, shallow directories, explicit __all__ exports, absolute imports and consistent test placement. It covers layered and domain-based structures, package initialisation, naming conventions and one-way dependencies.

When to use it. For planning Python package layouts, reusable libraries, module interfaces or test organisation. It applies when starting or restructuring a project, not for implementing application features themselves.