Added Comprehensive Python Cheatsheet to the Python section

[gto76]

What does this PR do?

Add Resource

For resources

Description

Comprehensive Python Cheatsheet is a Python language reference that strives to be comprehensive while being as concise as possible.

Why is this valuable (or not)

• Its conciseness enables it to also probe into deeper topics like coroutines, metaprogramming, and also some fun ones like audio and games while being just 50 pages long.
• Brian Kernighan thinks it's a "very helpful cheat sheet, quite long": https://www.cs.princeton.edu/courses/archive/spring19/cos333/python.help

How do we know it's really free?

The HTML is really free: https://gto76.github.io/python-cheatsheet
but the PDF isn't: https://transactions.sendowl.com/products/78175486/4422834F/view

For book lists, is it a book?

Although it has a "cheatsheet" in the title, being 50 pages long probably makes it more a book.

Checklist:

• Not a duplicate
• Included author(s) if appropriate
• Lists are in alphabetical order
• Needed indications added (PDF, access notes, under construction)

[eshellman]

I could use this! Welcome the free-programming-books.

[gto76]

Thank you very much!