Why Log in? Excellent question. You don't need to log in to use the books we've provided. But you won't be able to save your work and come back to it later. Don't worry: we have no plans to spam you with email, and we will never sell your contact information to anyone. If you are a student that is part of a course, please register and/or login. When you register be sure to choose the course that your instructor has given you.
This project is Open Source, but it does take time and resources. Especially as our popularity has grown we have server costs. We were also able to make great progress during the Summer of 2013 thanks to a generous grant from ACM-SIGCSE that supported one of our undergraduate students. It would be great if we could have a student working on this all the time.
If you these books have helped you, if you liked them, please consider making a small donation.
We now can also accept donations through Paypal
The books provided on interactivepython.org are free and open source. They are for educational purposes. As part of our educational mission we do collect usage data to help us better understand how you learn and how you use our books. In exchange, we may use this data to make decisions about revisions to the content, and we may use this data to publish academic papers. We would never publish anything that revealed your identity. We may share this data with fellow educational researchers, but rest assured that all personally identifying information will be anonymized before we do. If you have questions about this please feel free to contact us.