Do not see the link for the source code on the catalog page for this book.
Thanks for writing us about this, and I'm sorry for the frustration. The example files are now available, and you can download them at http://examples.oreilly.com/063692002....
Please let us know if you have any questions.
I'm so relieved that I finally found this. Now all I need to do is get python working. As you'll invariably find with learners, we get stuck on the corners of things, like finding stuff. This code was really hard to find and you should really have a sort of error handling in place. Never ever presume any of the steps are simple. There will be snags. We won't know what to do. That's when we need you most.