I found the cpython code's standard library has got a lot of good stuff and the inline documentation is generally very good. I learned things from csv, difflib,

I found the cpython code's standard library has got a lot of good stuff and the inline documentation is generally very good. I learned things from csv, difflib, heapq, and re. I'd recommend taking at least a quick look at any python standard library module before using it. https://github.com/python/cpython/tree/main/Lib https://github.com/python/cpython/tree/main/Lib