# Builtin Modules

Python has a rich standard library of built-in modules that provide a wide range of functionality. Some of the most commonly used built-in modules include: sys, os, math, datetime, random, re, itertools, etc.

Visit the following resources to learn more:

- [@official@Python Module Index](https://docs.python.org/3/py-modindex.html)
- [@article@Python Modules](https://www.digitalocean.com/community/tutorials/python-modules)
- [@article@Python - Built-In Modules](https://www.knowledgehut.com/tutorials/python-tutorial/python-built-in-modules)
- [@article@How to Set Environment Variables in Python (Step-by-Step)](https://roadmap.sh/python/set-environment-variable)