different types of inheritence...

[zipher]

> Apart from object composition or mix-in style, I want to illustrate something regarding the "arrow" of inheritance.
> 
> class super_dict(dict):
> 
>     def __init__(self, init={}, default_value=0, collision_function=None):
>        *expands what dict can do*
> 
>     def get_default(self):  #stupid method to illustrate a point
>        return self._default_value
> 
> class specialized_dict(dict):
> 
>     def update(self, other):
>         *change the behavior of how updates work*
> 
>     def setdefault(self, key, value):
>         if key=sentinel:
>             self[key]=0
>         else:
>             self[key]=value

Okay, perhaps I wasn't being clear.... 

THESE OBJECTS HAVE THE SAME CLASS *SYNTAX*, BUT COMPLETELY DIFFERENT *SEMANTICS*.

Comprende?  I'm not trying to be cryptic here.  This is a bit of OOP theory to be discussed.

Mark