New book "Hacking Secret Ciphers with Python" released. Free to download. (inventwithpython.com)

Hi, I'm the author of the book. While the ebook is free to download under a Creative Commons license, there are hard copies for sale on Amazon. 100% of proceeds go to the EFF, Creative Commons, and Tor Project.

This looks neat, I just got through the first chapter and already have learned so much! Thanks for putting this online for free.