[Python-Dev] Exceptions *must*? be old-style classes?

["Martin v. Löwis"]

Guido van Rossum wrote:
>>>a) Is Exception to be new-style?
>>
>>Probably not in 2.5; Martin and others have suggested that this could
>>introduce instability for users' existing exception classes.
> 
> 
> Really? I thought that was eventually decided to be a very small amount of code.

I still think that only an experiment could decide: somebody should
come up with a patch that does that, and we will see what breaks.

I still have the *feeling* that this has significant impact, but
I could not pin-point this to any specific problem I anticipate.

Regards,
Martin