[Python-Dev] Semantic of isinstance

[Greg Ewing]

Martin v. Löwis wrote:

> Again, I believe this is all included for ExtensionClasses: it looks
> for __class__ on the object if the type check fails, so that an
> ExtensionClass could be actually a class derived from the C type.

Now that we have had new-style classes for quite a
while, is there still a need to support ExtensionClasses?

--
Greg