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[Python-Dev] PEP 455: TransformDict

Antoine Pitrou solipsis at pitrou.net
Fri Sep 13 23:20:25 CEST 2013 
On Sat, 14 Sep 2013 00:05:27 +0300
Serhiy Storchaka <storchaka at gmail.com> wrote:
> 13.09.13 23:21, Antoine Pitrou написав(ла):
> > On Fri, 13 Sep 2013 23:16:10 +0300
> > Serhiy Storchaka <storchaka at gmail.com> wrote:
> >> 13.09.13 21:40, Antoine Pitrou написав(ла):
> >>> Alternative proposals and questions
> >>> ===================================
> >>
> >> Yet one alternative proposal is to add the dict.__transform__() method.
> >> Actually this not contradict TransformDict, but generalize it.
> >> TransformDict will be just handly interface to __transform__() as
> >> defaultdict to __missing__(). It provides only constructor, repr and
> >> pickling.
> >
> > Is it an alternative proposal or is it compatible with the PEP?
> > The PEP specifies the API, not the implementation.
> 
> Both. On one side, with this proposition TransformDict itself doesn't 
> deserve PEP. It will be trivial and obvious thing.

Well, TransformDict would still be the user-visible API, not
__transform__; like defaultdict is the user-visible API, not
__missing__.

Regards

Antoine.
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