On Jan 28, 2012, at 03:04 PM, Clint Byrum wrote: >Can you recommend a good package to look at to implement this? You can look at the flufl.enum (or any of the flufl.*) packages for this (among others, I'm sure). I have enabled builds and tests for all supported versions of Python, including both Python 2 and Python 3. I think it's representative of what you have to do today, at least for pure-Python libraries. Cheers, -Barry