Chaz Ginger wrote: > I was writing some code that used someone else class as a subclass. He > wrote me to tell me that using his class as a subclass was incorrect. I > am wondering under what conditions, if ever, does a class using a > subclass not work. > > Here is an example. For instance the original class might look like: > > class A : > def __init__(self,arg) : > self.foo = arg > def bar(self) : > return self.foo > > > And I defined a class B1 which looked like: > > > class B1(A); > def __init__(self,a1,a2) : > self.c = a1 > A.__init__(self,ag) > > > He said I should use it this way: > > class B2: > def __init__(self,a1,a2): > self.c = a1 > self.t = A(a2) > > def bar(self) : > self.t.bar() > > > Other than the obvious difference of B2 having an attribute 't', I can't > see any other obvious differences. Is there something I am missing? > > TIA > Chaz
When the developer *tells* you it won't work, that's a good indication. :-) You haven't missed anything: the developer was talking about his specific code, not python in general. (I'm on the Twisted list too. ;-) ) Peace, ~Simon -- http://mail.python.org/mailman/listinfo/python-list
