[Python-ideas] Revised**6 PEP on yield-from

[Greg Ewing]

Guido van Rossum wrote:

> This means that sending a non-None value into a generator that
> delegates to a non-generator iterator will fail. I doubt there will be
> too many use cases that are inconvenienced by this.

Okay, I'll leave it that way -- we can always relax it
later if need be.

I'll also update the PEP to be more clear about what
exception is raised and where it goes.

-- 
Greg