I'm the author of a short, quick-reference book, which covers the Python programming language and its most commonly used libraries and tools. It's called the Python Pocket Reference, is 75 pages long, and was first published by O'Reilly, in October 1998. As of 3/99, this book was in its 2nd printing. German, Japanese, and French language translations of this book have also been published.
The Python Pocket Reference covers Python 1.5.1, and is aimed at advanced programmers, and readers who are already familiar with Python. This book contains no program examples, just handy reference material in an easy-to-use format.
The Python Pocket Reference is designed to be a reference companion to O'Reilly's other Python books:
A fully revised and expanded 128-page 2nd Edition of this book was published in November 2001. Further details are available at O'Reilly's site.
A new revised and expanded 160-page 3rd Edition of this book was published in February 2005. This edition has been updated for Python release 2.4. Further details are available at O'Reilly's site.