Sites for proper Python programs?

[Ben Briggs]

Are there any sites that explain the proper way to layout a program
written in Python over multiple files? I've seen programs that have
files like '__builtin__' and '__init__', now obviously these are the
files that contain the built in stuff and the __init__ method of the
main class (I think :)). Is there any site that will explain how to
properly layout a program over multiple files/directories?    Ben