Libraries are collections of shared code. They're common in Python, where they're also called "modules," but they're also ...

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!

The __future__ module in Python is used for implementing features in the current Python version that will be incorporated in a future version. This is done so that you can adapt to the new feature.

A superset of Python that compiles to C, Cython combines the ease of Python with the speed of native code. Here's a quick guide to making the most of Cython in your Python programs.