There are many free eBooks available online. Some are PDF (or other) files you can download and others are web sites.
One or more of these eBooks may be used in the Python programming class.
Python Books
15 Free eBooks to Learn Python
19 Free Python eBooks
Python Cookbook (online)
Python Cookbook Third Edition
ActiveState - Popular Python Recipes
Python Programming/Tips and Tricks (Wikibooks)
30 Essential Python Tips and Tricks for Programmers
30 Python Language Features and Tricks You May Not Know About
There are several free ones available on the web. Here is one. (Calibre)
5 Excellent eBook Reader Apps for Ubuntu
5 of the Best Ebook Readers for Linux Users
10 Neat Python Tricks Beginners Should Know
Python Tips and Tricks
Python Cheat Sheet (pdf) (26 pages)
Python Cheat Sheet (pdf)
Python Crash Course - Cheat Sheets
Python For Beginners
