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.
_______________________________________________
Python-Dev mailing list
[email protected]
http://mail.python.org/mailman/listinfo/python-dev
Unsubscribe:
http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
