Granted I haven't read much open source code but when I was working in Flask, I found the source code to be awesomely clear and well-documented. I actually lear

Granted I haven't read much open source code but when I was working in Flask, I found the source code to be awesomely clear and well-documented. I actually learned quite a bit about Python by reading Flask code. Also, no-one could explain "g" in a way that made sense, but the source code made it obvious. Would recommend reading it if you're into Python at all.