Pythonistas: The "Samurai Principle" says to return victorious, or not at all. This is why django.db wisely throws an exception, instead of simply returning None, if it encounters a "record not found".
I illustrated the value of that concept, here: http://c2.com/cgi/wiki?SamuraiPrinciple -- http://mail.python.org/mailman/listinfo/python-list
