abstract and overriding

If I create an abstract class that extends bpy.types.Operator and place some default implementation within that abstract class and the execute() method. Can I override the execute method, while keeping the abstract implementation as well. Other languages you might call super… is this possible in python and blender?

Yes, you can use super in python…

example:
http://code.google.com/p/blender-cod/source/browse/blender_26/init.py#379