“Charming Python: Iterators and simple generators” by David Mertz, PhD, September 2001:

Core Python Programming by Wesley J. Chun. Prentice Hall 2001.

Core Python Programming Supplemental Web Site:

Python Enhancement Proposals (PEPs):

Python Language Home Page:

“Unifying types and classes in Python 2.2” by Guido van Rossum, April 2002:

“What's New in Python 2.2” by Andrew Kuchlin, December 2001:

“What's New in Python 2.2” (ZPUG-DC Talk) by Guido van Rossum, September 2001: