Frank Millman, just a short note, more expert people can give you better answers. There aren't abstract classes in Python. They are all concrete. You may have classes with undefined methods (they may raise NotImplementedError). Multiple inheritance isn't supported by Java and Ruby, but it is supported by C++ and Python, so you can use it in Python. There are also ways of mixing methods. You may define methods, and then lists of methods to add to your classes.
Bye, bearophile -- http://mail.python.org/mailman/listinfo/python-list
