New-style objects are not instances, apparently

["Martin v. Löwis"]

> Further experimentation showed that derivation from object was the
> culprit; new-style objects are not considered "instances" in the above
> sense.  I wasn't able to figure out a workaround.  Is there one, or is
> the distinction between traditional classes and built-in types only
> going to get more and more hazy?

In the long run (ie. Python 3), the distinction is going to be very
hazy, very dark: it will entirely disappear. There will be only one
concept of type/class, not two, so there will be no point
distinguishing between types and classes.

Regards,
Martin