Folks, the legendary David Beazley has released a free, online course on practical python programming! It was initially content for an in-person training, now online and free for everyone.
David Beazley is a very well known member of the Python community. His PyCon talks are extremely interesting and teach you a lot about the workings of Python and building some incredible stuff in 3 hours.
Some of my favorite talks:
Live code a web-assembly interpreter in one hour!
A live-coding session exploring various concurrency models in Python
Solve common data manipulation problems using Python's built-in types.
Learn lambda calculus and derive the powerful Y-combinator using Python