[Python-ideas] Unpacking a dict

[Sven R. Kunze]

On 25.05.2016 15:11, Michael Selik wrote:
> I hope to keep discussion in this thread focused on the most basic 
> form of dict unpacking, but we could extended mapping unpacking 
> similarly to how PEP 3132 extended iterable unpacking. Just 
> brainstorming...

Another idea (borrowed from Erlang):

>>> mapping = {"a": 1, "b":  2, "c": 3}
 >>> {"a": x, "b": y, "c": 3} = mapping
 >>> x,y
(1,2)


>>> mapping = {"a": 1, "b":  2, "c": 3}
 >>> {"a": x, "b": y, "c": 2} = mapping
Traceback:
ValueError: key 'c' does not match to 2


Best,
Sven

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