INADA Naoki added the comment:
pure Python Future.__iter__ don't use what yield-ed.
def __iter__(self):
if not self.done():
self._asyncio_future_blocking = True
yield self # This tells Task to wait for completion.
assert self.done(), "yield from wasn't used with future"
return self.result() # May raise too.
I felt no-None value is sent by iter.send(val) wasn't make sense.
But Tornado did it (maybe, for compatibility to Tornado's generator.)
So this patch ignores when non-None value is passed.
Additionally, I moved NEWS entry about C Future from "core and builtin"
section to "library" section.
----------
keywords: +patch
stage: -> commit review
Added file: http://bugs.python.org/file45165/future-iter-send.patch
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