[Python-3000] Discussions with no PEPs

[Barry Warsaw]

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On Mar 11, 2007, at 7:50 AM, Benji York wrote:

> Greg Ewing wrote:
>> Barry Warsaw wrote:
>>> We already have an established, community accepted implementation  
>>> of  interfaces,
>> Really? Which one is that?
>
> I believe Barry was referring to zope.interface.

Correct.  AFAIK, there is only one other competing, mature package  
(but please correct me if I'm wrong!): PyProtocols.  My impression is  
that the latter is essentially a superset of the former and that the  
latter is compatible with the former.

The question then becomes whether we really want to invent a third  
way of doing interfaces in Python, or whether our time is better  
spent selecting and promoting one of the existing, tried-and-true  
packages.  Perhaps it would be better for us to figure out how and if  
the two packages can be integrated.  If a third way is still  
advocated, then I think it must have a fairly high barrier to  
acceptance in order to push aside such long accepted libraries.

- -Barry

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