On Sat, Sep 29, 2012 at 10:40 PM, Steven D'Aprano <steve+comp.lang.pyt...@pearwood.info> wrote: > On Sat, 29 Sep 2012 17:51:29 -0400, Piet van Oostrum wrote: > >> It is not necesarily calling the parent class. It calls the initializer >> of the next class in the MRO order and what class that is depends on the >> actual multiple inheritance structure it is used in, which can depend on >> subclasses that you don't know yet. This makes it even worse. > > I don't quite follow you here. It sounds like you are saying that if you > have these classes: > > # pre-existing classes > class A(object): pass > class B(object): pass > > # your class > class C(A, B): pass > > and somebody subclasses A or B, the MRO of C will change. That is not > actually the case as far as I can see.
The MRO of C will not change, but the class that follows C may be different in the MRO of a subclass. -- http://mail.python.org/mailman/listinfo/python-list