[Python-ideas] A sorted version of **kwargs

[Imri Goldberg]

On Thu, Jan 20, 2011 at 6:42 PM, Guido van Rossum <guido at python.org> wrote:
>
> > -1.
> >
> > How often do you really need this ?
> >
> > In which of those cases wouldn't a static code analysis give you
> > the call order of the parameters already  ?
> >
> > "Nice to have" is not good enough to warrant a slow down of
> > all function calls involving keyword arguments, adding overhead
> > for other Python implementations and possibly causing problems
> > with 3rd party extensions relying on getting a PyDict for the
> > keyword arguments object.
>
> What he says.
>
> In addition, I wonder what the semantics would be if the caller passed
> **d where d was an *unordered* dict...


What if the default behavior stays as it is today, but a magic decorator is
added, (maybe @ordered_kwargs or some such),
and only for these kind of functions the new behavior applies.
Also, given such a decorator, when given **d where d is a regular dict, the
implementation could possibly throw an error. (Or maybe it is up to the
implementor of the specific function).

Cheers,
Imri


-- 
Imri Goldberg
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