http://www.oreilly.com/catalog/python2/ 2nd edition ISBN 0-596-00085-5
now replaced by
http://www.oreilly.com/catalog/python3/ 3rd edition ISBN 0-596-00925-9
Notes to 2nd edition
An introduction to using the various standard libraries which come with the PythonLanguage. Not the Python equivalent of ProgrammingPerl. Whereas the CamelBook serves as a tutorial, reference, guide, and sourcebook for the PerlLanguage, ProgrammingPython assumes familiarity with Python and jumps straight into examples of library usage.
Notes to 3rd edition
There is a section on the use of the ZopeApplicationServer and PloNe. There is also a section on various ways of interfacing CeeLanguage and CeePlusPlus code to PythonLanguage, including the SimplifiedWrapperAndInterfaceGenerator (SWIG).
OreillyAndAssociates has other PythonLanguage books as well - see http://www.oreilly.com/pub/topic/python