As far as I know, I don't thing it's possible in Zope. I'm very interesed in a way to do that, so I thought about a possible solution: - make an empty class in python, e.g. MySuperClass; - when creating your ZClass, make MySuperClass one of its Base Class; - if you want to modify your ZClass Base classes, just add super classes to MySuperClass and create/modify and __init__ method in it: class MySuperClass(NewBaseClass01, NewBaseClasse02...): def __init__(self, parmeters...): NewClass01.__init__(parameters01) NewClass02.__init__(parameters01) ... It sounded a good idea to me and worked fine in python. However I got: ****************** Error Type: TypeError Error Value: unbound method must be called with class instance 1st argument ****************** Not very useful but who knows. Let me know if you figured out a solution. On Fri, 10 Mar 2000, Olivier Deckmyn wrote:

Is it possible to change the base classes of a ZClass ?

Even if there is no instances of this ZClass yet ?

thx !

_______________________________________________ Zope maillist - Zope@zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )