How to use the regular expression functions provided by the ‘re’ library to match, search, and replace text in your Python programs.

I recently switched to using python 2.5 from 2.4, one of the new language level features in 2.5 is conditional expressions. Which I thought was odd because ...

Does anyone know of how to get the same behavior as in the Python implementation? Also, any suggestions on how to make the regular expressions "better" would be much appreciated.