[Zope-dev] Multiple inheritance woes

[Martijn Pieters]

At 20:05 09/09/99 , Phillip J. Eby wrote:
>At 02:54 PM 9/9/99 +0200, Martijn Pieters wrote:
> >At 14:33 09/09/99 , Rik Hoekstra wrote:
> >> >
> >> > I define a baseclass derived from CatalogAware and DTMLMethod:
> >> >
> >> > class Base(CatalogAware, DTMLMethod):
> >> >      def index_object(self):
> >> >          # check a few things I want to know about
> >> >          # before indexing, maybe even not allowing
> >> >          # the indexing
> >> >          CatalogAware.index_object(self)
> >> >
> >> >
> >>
> >>A shot in the dark: Shouldn't this be
> >>CatalogAware().index_object(self)? At least this explicitly
> >>instanciates CatalogAware and stops raising TypeErrors. But I'm not
> >>sure this completely solves your problem
> >>
> >>Rik
> >
> >Sorry, you missed =). In normal python this would work, but as Philip
> >pointed out, when using Acquisition and ExtensionClasses, things are
> >different, and throw the Python interpreter off.
> >
>
>Actually, no, it wouldn't, because then you'd get a different TypeError,
>this one for having passed too many arguments to the index_object() method.
>  And besides, you don't want to call another object's index_object()
>method, you want to call an overridden version of *your* index_object()
>method.

Heh, why does noone ever understand what I am saying =). I ment that _my_ 
code would normally work in Python. I wasn't commenting on Rik's. There is 
a reasonable change I might meet him one day. After all, he's only about an 
hours drive away. =)


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