The features added in PEPs should be incorporated into the documentation -- if they're not, please file a bug -- so people mostly don't refer to PEPs except for historical purposes.
It's not code, but also see Raymond Hettinger's talk "Beyond PEP 8" on YouTube. Actually, pretty much any talk by Hettinger is worth watching:
It's not code, but also see Raymond Hettinger's talk "Beyond PEP 8" on YouTube. Actually, pretty much any talk by Hettinger is worth watching:
http://pyvideo.org/speaker/138/raymond-hettinger