[Python-ideas] Revised revised revised PEP on yield-from

[Greg Ewing]

Bruce Leban wrote:
> I'd like to understand better what this function would do:
> 
>     def generate_concatenate(generator_list):
>         for g in generator_list:
>             yield from g
> 
> in particular, what does generator_concatenate.close() do?

If it happens to be in the midst of iterating over
one of the generators from the list at the time
(i.e. executing the 'yield from') then that generator
is finalized, then generate_concatenate itself is finalized.

Otherwise, nothing special happens.