I learned a lot from this book: - https://www.cosmicpython.com/ https://www.cosmicpython.com/ And was enforcing which layer can do imports from another layer

I learned a lot from this book: - https://www.cosmicpython.com/ https://www.cosmicpython.com/ And was enforcing which layer can do imports from another layer using this tool: - https://pypi.org/project/import-linter/ https://pypi.org/project/import-linter/