Two modules use the deprecated Sets module, leading to a warning:
$ /home/tseaver/projects/agendaless/OSI/karlsample/eggs/FormEncode-1.0.1-py2.6.egg/formencode/foreach.py:8: \
DeprecationWarning: the sets module is deprecated
from sets import Set
The attached patch prefers the new 'set' builtin (available since Python 2.4), falling back to the import.
Path removing DeprecationWarnings for 'from sets import Set'
My patch was against version 1.0.1: it looks like later releases already fix these warnings.