On 05/25/2016 11:52 AM, Paul Moore wrote:
On 25 May 2016 at 19:47, Ethan Furman wrote:
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.
OTOH, you could also do
x = SimpleNamespace(**mapping)
and use x.a, x.b, x.c.
Beside visual clarity, the other big reason for using local variables instead constant dict access is speed -- which you lose by using another object. -- ~Ethan~