Where can I find an easy summary of best Python programming practises?

Where can I find a compact summary of best Python Practises, preferably in poster format or a few pages long?

Giving my project group a website is in my eyes not too effective, since I'd like to have something that they can glance back on quickly and easily understand. I've tried Google but seem to have no luck.

Backstory: I'm in a project group with 8 people with a moderate volume of code, written in Python. I was able to convince them to use Git at the start of the project, that has worked quite nicely. What I am now having a greater problem with is trying to get people to use some decent code formatting. I spent no less than 8 hours deciphering spaghetti code today that had no spaces, no comments and home-written functions for stuff that was available in libraries.