Hi peter, ya got it working :-) now i understand mro better.
thanks, KM ------------------------------------------------------------- On Tue, Jul 26, 2005 at 04:09:55PM -0400, Peter Hansen wrote: > km wrote: > > Hi all, > > > > In the following code why am i not able to access class A's object > > attribute - 'a' ? I wishto extent class D with all the attributes of its > > base classes. how do i do that ? > > > > thanks in advance for enlightment ... > > > > here's the snippet > > > > #!/usr/bin/python > > > > class A(object): > > def __init__(self): > > self.a = 1 > > > > class B(object): > > def __init__(self): > > self.b = 2 > > > > class C(object): > > def __init__(self): > > self.c = 3 > > > > class D(B, A, C): > > def __init__(self): > > self.d = 4 > > super(D, self).__init__() > > Each class should do a similar super() call, with the appropriate name > substitutions. > > Calls to __init__ must be made explicitly in subclasses, including in > the case of multiple inheritance. > > Also note that often (usually) you would like the __init__ call to come > *before* other location initializations, and it's the safest thing to do > unless you have clear reasons to the contrary. > > -Peter > -- > http://mail.python.org/mailman/listinfo/python-list > -- http://mail.python.org/mailman/listinfo/python-list
