[Python-ideas] Fwd: Replacing Infinite while Loops with an Iterator: async edition

[jab at math.brown.edu]

On Sunday, June 24, 2018 at 7:48:34 PM UTC-4, Greg Ewing wrote:
>
> j... at math.brown.edu <javascript:> wrote: 
> > On Jun 23, 2018, at 21:11, Nathaniel Smith <n... at pobox.com 
> > <mailto:n... at pobox.com>> wrote: 
> > 
> >     He's asking for an async version of the 'iter' builtin, presumably 
> >     something like: 
> >     async def aiter(async_callable, sentinel): 
> >        while True: 
> >            value = await async_callable() 
> >            if value == sentinel: 
> >                break 
> >            yield value 
> >     -n 
> > 
> > Yes, exactly (thanks, Nathaniel). Wouldn't that be a useful built-in? 
>
> Ah, sorry, I misunderstood. 
>
> I'm surprised this doesn't exist already -- it seems like an 
> obvious thing to have along with the other async features. 
>
> -- 
> Greg 
>

Just submitted a PR: https://github.com/python/cpython/pull/8895
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