inheritance example

inhex.py

In [1]: class Ellipse(object):
   ...:     def setSize(self, x, y):
   ...:         pass
   ...:     
   ...:     

In [2]: class Circle(Ellipse):
   ...:    def setSize(self, x):
   ...:        pass
   ...:     
   ...:     

In [3]: Ellipse().setSize(1,2)

In [4]: Circle().setSize(1)

In [5]: Circle().setSize(1,2)
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)

/<ipython console> in <module>()

TypeError: setSize() takes exactly 2 arguments (3 given)