[Python-ideas] yield from multiple iterables (was Re: The async API of the future: yield-from)

Mark Lawrence breamoreboy at yahoo.co.uk
Fri Oct 19 16:05:54 CEST 2012

On 19/10/2012 14:56, Nick Coghlan wrote:
> On Fri, Oct 19, 2012 at 10:55 PM, Christian Tismer <tismer at stackless.com> wrote:
>> I was curious and searched quite a lot.
>> It was v3.3.0a1 from 2012-03-15 as a reaction to #14230 and #14220
>> from Marc Shannon, patched by Benjamin.
>> Now I found the original implementation. That looks very much
>> as I'm thinking it should be.
>> Quite a dramatic change which works well, but really seems to remove
>> what I would call "now I can emulate most of Stackless" efficiently.
>> Maybe I should just try to think it would be implemented as before,
>> build an abstraction and just use it for now.
>> I will spend my time at PyCon de for sprinting on "yield from".
> Yeah, if we can get Greg's original optimised behaviour while still
> supporting introspection properly, that's really where we want to be.
> That's the main reason I'm a fan of Mark's other patches moving more
> of the generator state from the frame objects out into the generator
> objects - my suspicion is that generator objects themselves need to be
> maintaining a full "generator stack" independent of the frame stack in
> the main eval loop in order to get the best of both worlds (i.e.
> optimised suspend/resume with confusing debuggers).
> Cheers,
> Nick.

There's nothing like confusing debuggers or have I read that wrong? :)


Mark Lawrence.

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