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Reading a random element from a set

ast nomail at com.invalid
Wed Jul 26 03:49:22 EDT 2017 
"Steven D'Aprano" <steve+comp.lang.python at pearwood.info> a écrit dans le message de 
news:597841eb$0$2878$c3e8da3$76491128 at news.astraweb.com...
> On Wed, 26 Jul 2017 08:58:03 +0200, ast wrote:
>
>> Hello
>>
>> random.choice on a set doesn't work because sets are not indexable
>>
>> so I found nothing better than taking an element and puting it back
>>
>> a = {5, 7, 8, 3, 0, 8, 1, 15, 16, 34, 765443}
>> elt = a.pop()
>> a.add(elt)
>
>
> That's not *random*, it is arbitrary but predictable. If you try it twice
> in a row, you will probably get the same element each time. (Depends on
> the elements, but very likely.)
>

> If you need a random element, best way is:
>
>
>
>>>> random.choice(list(a))
> 8
>>>> random.choice(list(a))
> 15
>>>> random.choice(list(a))
> 16
>

Thanks
random.sample(a, 1)[0] works too
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