"Introduction to computing and programming with Python: A Multimedia Approach" by Mark Guzdial, a CS professor at Georgia Tech.
It uses the Jython Environment for Students (JES). It is completely free and open source. You can use it for example to work with and manipulate images or sounds.
A similar book is available in preview form: "Introduction to Media Computation: A Multimedia Cookbook in Python".
See this page for info on the books, the software, course notes, research papers, and more info: http://coweb.cc.gatech.edu/mediaComp-plan
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