When should I use classes?
Kent Johnson has an interesting essay on how to use Python classes.
4. More Control Flow Tools talks about persistent variables in a function.
Python Coding Guidelines and Python Idioms and Efficiency Suggestions are two excellent documents on how to structure Python and specific Pythonic coding.
GallerPy is a Python program that takes the images in the directory and automatically generates thumbnailpages, etc.
No databases, no messing about. Just put images in directories, and everything is done automatically.
DrPython is a n interesting-looking editor. Be very curious to see whether the Plug-ins can be used to automatically check the code in and out.
A Tao of Regular Expressions summarises important Linux commands and how to use RE.