[Python-ideas] Add single() to itertools

[Joao S. O. Bueno]

On 31 October 2017 at 10:52, Steven D'Aprano <steve at pearwood.info> wrote:
> On Tue, Oct 31, 2017 at 10:42:23AM -0200, Joao S. O. Bueno wrote:
>> When I need something like this, I usually rop a line on the module
>> namespace that goes like:
>>
>> first = lambda x: next(iter(x))
>
> That doesn't meet the requirement that x has ONLY one item.
>
> And using lambda like that is bad style. This would be better:
>
> def first(x): return next(iter(x))
>
> and now first has a proper __name__.


I know that. But then, I'd rather write it as  3-4 lines in some utils module.

So, although I was initially -1 to -0 on this suggestion, maybe it has a point.

>
>
>
> --
> Steve
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