Problem subclassing tuple

[sismex01 at hebmex.com]

> 
> I'm really quite interested in why this doesn't work. I *thought* I'd
> grasped the concept of the new style classes but this seems 
> to demonstrate
> that I haven't!
> 
> Thanks for the response.
> 
> John Wilson
> The Wilson Partnership
> http://www.wilson.co.uk
> 

Most prob'ly you've already grasped it; the problem with
the current implementation is that many internal classes
don't "allow" subclassing, because the interpreter's
internal mechanics access the C code for those classes
(and subclasses), so your Python code doesn't get called.

Bummer, really. :-/

-gus