2.2 features

[Olaf Delgado]

 Tim Hochberg wrote:

>isinstance(anInstance, aClass) => aClass.classof(anInstance)
>isubclass(aSubclass, aBaseclass) => aBaseclass.superclassof(aSubclass)

Not bad! How about
  aClass.has_instance(anInstance)
and
  aBaseclass.has_subclass(aSubclass),
then?

This would resemble dictionary.has_key(...).

Olaf