[Python-ideas] Adding "+" and "+=" operators to dict

Ethan Furman ethan at stoneleaf.us
Fri Feb 13 02:40:23 CET 2015


On 02/12/2015 04:30 PM, Ethan Furman wrote:
> On 02/12/2015 04:26 PM, Eric Snow wrote:
>> On Thu, Feb 12, 2015 at 11:21 AM, Thomas Kluyver <thomas at kluyver.me.uk> wrote:
>>> Or perhaps even a classmethod:
>>>
>>> dict.merged(a, b, c)
>>
>> A dict factory classmethod like this is the best proposal I've seen
>> thus far. *  It would be nice if the spelling were more succinct
>> (that's where syntax is helpful).  Imagine:
>>
>>   some_func(**dict.merged(a, b, c))
> 
> That looks an awful lot like
> 
>     some_func(**chainmap(a, b, c))

or maybe that should be

     some_func(**chainmap(c, b, a))

?

Whatever we choose, if we choose anything, should keep the rightmost wins behavior.

--
~Ethan~

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