This course is very well designed. You alternate between small videos (3mins) and small exercises through an interactive console. The teachers are experts in their fields and the video and audio are professional (compared to many other courses).
I truly enjoy Datacamp, I use it quite often.
To be honest, I post this advice because I received a mail from Datacamp asking me to do it, probably spotting that I'm an happy user. But I have nothing to win about it so this post is honest and I hope that anyone looking to learn Python will follow this course, it's a good choice.