[Q] is 'yield from' syntax sugar for 'for'+'yield'?
Chris Angelico
rosuav at gmail.com
Thu Aug 14 06:02:46 EDT 2014
On Thu, Aug 14, 2014 at 7:59 PM, Makoto Kuwata <kwatch at gmail.com> wrote:
> I understand that 'val = yield from xs' is completely different from::
>
> for x in xs:
> ret = yield x
> val = x
>
> Return value is propagated by StopIteration, like:
>
> it = iter(xs)
> try:
> while 1:
> yield next(it)
> except StopIteration as ex:
> val = ex.value
It's even more complicated than that. The PEP specifies the exact semantics.
ChrisA
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