[Python-Dev] PEP 492 quibble and request

[Greg Ewing]

Guido van Rossum wrote:
> On Sat, May 2, 2015 at 1:18 PM, Arnaud Delobelle <arnodel at gmail.com 
> <mailto:arnodel at gmail.com>> wrote:
> 
>     Does this mean that
>     somehow "await x" guarantees that the coroutine will suspend at least
>     once?

No. First, it's possible for x to finish without yielding.
But even if x yields, there is no guarantee that the
scheduler will run something else -- it might just
resume the same task, even if there is another one that
could run. It's up to the scheduler whether it
implements any kind of "fair" scheduling policy.

-- 
Greg