I am -1 on the whole idea. What is either asking for the identifier being assigned to having semantic meaning in the language, something we do not have anywhere else. (yes, we have special names, but the language does not actually care about what object you assign to the special name, and the name itself does not change the behavior of the assignment.) OR is totally redundant to something we can already do: a, b, c, *r = mapping.values() -----Original Message----- From: Python-ideas [mailto:python-ideas-bounces+tritium-list=sdamon.com@python.org] On Behalf Of Ethan Furman Sent: Wednesday, May 25, 2016 2:47 PM To: python-ideas@python.org Subject: Re: [Python-ideas] Unpacking a dict On 05/25/2016 11:42 AM, Steven D'Aprano wrote:
On Wed, May 25, 2016 at 01:11:35PM +0000, Michael Selik wrote:
py> mapping = {"a": 1, "b": 2, "c": 3} py> {"a": x, "b": y, "c": z} = mapping py> x, y, z (1, 2, 3)
I think that is too verbose and visually baffling. I'd rather see something less general and (in my opinion) more useful:
a, b, c = **mapping
being equivalent to:
a = mapping['a'] b = mapping['b'] c = mapping['c']
+1 Simplest, easiest to grok, probably solves 95+% of the use-cases. -- ~Ethan~ _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/