Cool Python Modules

String Similarity

google-diff-match-patch - The Diff Match and Patch libraries offer robust algorithms to perform the operations required for synchronizing plain text.

http://code.google.com/p/google-diff-match-patch/wiki/API

pylevenshtein - Levenshtein (edit) distance, and edit operations, string similarity...

http://code.google.com/p/pylevenshtein/

difflib - classes and functions for comparing sequences

http://docs.python.org/library/difflib.html

Database Tools

uuid - Python built-in module for creating unique ids
http://docs.python.org/library/uuid.html

django-command-extensions: UUIDField -  uuid field distributed with django-comamnd-extensions.
http://code.google.com/p/django-command-extensions/

django-uuidfield - stand-alone Django UUIDField implementation.
https://github.com/dcramer/django-uuidfield

System Tools

Imp - get python internals
http://docs.python.org/library/imp.html

Django Tools

AutoSlugify - automate slug field
http://packages.python.org/django-autoslug/