On 2018-04-12 14:46, Andrés Delfino wrote:
> Extending the original idea, IMHO it would make sense for the dict
> constructor to create a new dictionary not only from several mappings, but
> mixing mappings and iterables too.
>
> Consider this example:
>
> x = [(1, 'one')]
> y = {2: 'two'}
>
> Now: {**dict(x), **y}
> Proposed: dict(x, y)
>
> I think this extension makes the call ostensibly easier to read and grep.
It allows for creating a flattened dict from an iterable of dicts, too,
which I've occasionally wanted:
>>> configs = {'a': 'yes'}, {'b': 'no'}, {'c': 3}
>>> dict(*configs)
{'a': 'yes', 'b': 'no', 'c': 3}
versus:
>>> dict(chain.from_iterable(c.items() for c in configs))
{'a': 'yes', 'b': 'no', 'c': 3}
Ed
signature.asc
Description: OpenPGP digital signature
_______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
