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!

Second, when you import a module in Python, all code in that module will be executed. This can significantly slow things down if there are lots of submodules to import.

Free-threaded Python is now officially supported, though using it remains optional. Here are four tips for developers getting started with true parallelism in Python.