multiple inheritance & __init__

[Robb Shecter]

Interesting - I had the sazme issue yesterday.  I forgot / didn't 
realize, though, that you have to call __init__ explicitly.  I also 
implemented an Observer class that I used via multiple inheritance.  So, 
although I'm not answering your question, I thought I'd post the classes 
that I came up with.  They're fairly Java-like - I have mixed feelings 
about that:


class Observable:
     """
     An object that generates events that other objects are
     interested in knowing about.
     """
     def __init__(self):
         self.__observerList = []

     def addObserver(self, anObserver):
         "Add the given listener to the list of observers"
         self.__observerList.append(anObserver)

     def notifyObservers(self, aMessage):
         """Call the notify() method on all observers in my list.
            The aMessage parameter is appliction-specific."""
         for observer in self.__observerList:
             observer.notify(self, aMessage)


class Observer:
     """
     An object that wishes to be notified when something
     has happened.
     """
     def notify(self, aSender, aMessage):
         "Recieve a message from an observable object."
         print `self` + " received notification: " + `aMessage`