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Mon Oct 10 14:25:59 CEST 2005 · http://mail.python.org/pipermail/python-dev/2005-October/057136.html

Guido van Rossum wrote:
> On 10/9/05, Jim Fulton <jim at zope.com> wrote:
> 
>>Based on the discussion, I think I'd go with defaultproperty.
> 
> 
> Great.
> 
> 
>>Questions:
>>
>>- Should this be in builtins, alongside property, or in
>>   a library module? (Oleg suggested propertytools.)
>>
>>- Do we need a short PEP?
> 
> 
> I think so. From the responses I'd say there's at most lukewarm
> interest (including from me).

Hm, I saw several responses from people who'd built something
quite similar.  This suggests to me that this is a common need.

 > You might also want to drop it and just
> add it to your personal (or Zope's) library.

I have something like this in Zope's library.  I end up with a
very small package that isn't logically part of other packages,
but that is a dependency of lots of packages.  I don't like that,
but I guess I should get over it.

I must say that I am of 2 minds about things like this.  On the one
hand, I'd like Python's standard library to be small with packaging
systems to provide "extra batteries".  OTOH, I often find small
tools like this that would be nice to have readily available.

Jim

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[Python-Dev] defaultproperty