Core Python Programming, Second Edition, Wesley Chun, 2007 

ISBN 0-13-226993-7

PrenticeHall CoreSeries

http://corepython.com/

This covers PythonLanguage versions 2.6. and 3.0.
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I am finding this a helpful book in getting to grips with the PythonLanguage used in CubicWeb -- JohnFletcher
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CategoryBook CategoryPython