There is a repository out there, but it's location is not clear to me.
For other books it is avaialble from the book summary page with just a click.
Thanks for your interest in Learning Python with Raspberry Pi. To access the CD/DVD content for Wiley/ Wrox titles go to:
Then enter the ISBN number (found on Copyright page of the ebook), the title and the author's name, and a download link for the CD/DVD contents will appear for that book.