Python Cookbook, 2nd ed. by AlexMartelli et al. (ISBN 0596007973 )
One of the CookbookSeries published by OreillyAndAssociates.
Additional Python Cookbook recipes: http://aspn.activestate.com/ASPN/Python/Cookbook/
The first edition of this book (ISBN 0596001673 ) is a delightful read. It teaches PythonIdioms and what's "Pythonic" by its examples. It greatly increased my love of the Python language itself. Now that I'm learning PerlLanguage, I appreciate Python's "batteries included" philosophy, as exemplified in this book, even more. -- ElizabethWiethoff