** Suggestion. Sorry for opening an issue (and not a PR).
I believe it will be a great idea to add a new chapter for a coding style according to PEP 8.
Although some projects have their own coding style, it's still important to learn the basics of Python conventions so beginner's code will be much more cleaner and readable for others.
I know you used Python conventions during the course but I think there should be a new whole chapter for this to emphasize this topic.