On 2012-11-14, at 18:10 , Mark Adam wrote:
>
> Try the canonical {'x':1}. Only dict allows the special
> initialization above. Other collections require an iterable.
Other collections don't have a choice, because it would often be
ambiguous. Dicts do not have that issue.
> I'm guessing
> **kwargs initialization was only used because it is so simple to
> implement, but that's not necessarily a heuristic for good language design.
In this case it very much is, it permits easily merging two dicts in a
single expression or cloning-with-replacement. It also mirrors the
signature of dict.update which I think is a Good Thing.
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