[Python-Dev] {}.getitem() (was Re: PEP-0218)

[M.-A. Lemburg]

Guido van Rossum wrote:
> 
> > M.-A. Lemburg:
> > > Shouldn't be hard to do... the C API for this is already in place:
> > > PyDict_Next(). I'd prefer a method .getitem(), though, which then
> > > returns a tuple (key, value).
> >
> > IMO '.pickitem()' would be a better name, since many people would
> > think, that 'getitem()' would take some kind of index as parameter.
> > Nevertheless I think this is a nice idea, though.
> 
> Pronouncement:
> 
> It is only efficient to get the *first* item, so let's make that
> explicit.  The method names will be:
> 
>  .firstkey()

-1

>  .firstvalue()

-1

>  .firstitem()

+1

I really think that .firstitem() is both more intuitive and 
efficient -- .firstvalue() and .firstkey() are simply derivatives
of this method or how would you define the return value of
those two methods ?
 
> Moshe will check in a patch.
> 
> Thinking aloud:
> 
> Would it be useful to also implement popkey(), popvalue(), popitem(),
> which would remove the first item and then return the relevant part of
> it?

+1

Same comment as above... .popitem() suffices.
 
> --Guido van Rossum (home page: http://www.python.org/~guido/)
> 
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-- 
Marc-Andre Lemburg
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