It works but I don't know whether it's formally inheritance or class variable.
Before code was url = os.environ['HTTP_HOST'] if os.environ.get('HTTP_HOST') else os.environ['SERVER_NAME'] if url.find('niklas') > 0: and now the change saves me from repeating myself! util.py: url = os.environ.get("HTTP_HOST", os.environ["SERVER_NAME"]) #declared as class variable(?) And viola just test if util.url.find('niklas') > 0: Exactly what I wanted to do with your experienced guidance. Many thanks Happy refactored -- http://mail.python.org/mailman/listinfo/python-list