[Python-Dev] PEP 246, redux

[Phillip J. Eby]

At 05:42 PM 1/10/05 -0500, Bob Ippolito wrote:

>On Jan 10, 2005, at 16:38, Phillip J. Eby wrote:
>
>>At 07:42 PM 1/10/05 +0100, Alex Martelli wrote:
>>
>>>On 2005 Jan 10, at 18:43, Phillip J. Eby wrote:
>>>    ...
>>>>I am not saying we shouldn't have a tp_conform; just suggesting that it 
>>>>may be appropriate for functions and modules (as well as classic 
>>>>classes) to have their tp_conform delegate back to 
>>>>self.__dict__['__conform__'] instead of a null implementation.
>>>
>>>I have not considered conformance of such objects as functions or 
>>>modules; if that is important,
>>
>>It's used in at least Zope and PEAK; I don't know if it's in use in Twisted.
>
>SVN trunk of Twisted (what will be 2.0) uses zope.interface.

What I meant was, I don't know if Twisted actually *uses* interface 
declarations for modules and functions.  It has the ability to do so, 
certainly.  I was just saying I didn't know if the ability is actually used.

PEAK uses some interfaces for functions, but I don't think I've ever used 
them for modules, and can think of only one place in PEAK where it would 
make sense to declare a module as supporting an interface.  Zope policy is 
to use interfaces for *everything*, though, including documenting the 
interface provided by modules.