[Chuck Esterbrook] > Is there a way, at runtime, to make C also inherit from A. The key here is _at runtime_. > class A: def a(self): print self.__class__ class B: def b(self): print self.__class__ class Top: pass t=Top() l=list(Top.__bases__) l.append(B) l.append(A) Top.__bases__=tuple(l) t.b() t.a() ### Output __main__.Top __main__.Top --Darrell