Python in a nutshell also comes in a second edition: http://www.oreilly.com/catalog/pythonian2/index.html. Here, many of the new features in Python 2.5 are included. I haven't read through the first the edition, but I can honestly say that reading through the second edition has made me a better programmer, not just a better Python programmer. I only wish I'd read through it earlier, which would have saved me a lot of agony:)
-Tor Erik -- http://mail.python.org/mailman/listinfo/python-list
