This post explains what a Python module is and how to use it to drastically extend the capabiltiies of your code. Plus: how to make your own!

For apps with a module entry point, make a stub: Some applications use a module as an entry point, for instance by having a __main__.py file that’s invoked when the module is imported.

Learn which Python standard library modules are headed for the boneyard in Python 3.13, and how to replace them.