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> Maybe it's possible to give an interpretation to awaiting on a threaded
> Future? __await__ could return a new asyncio Future, and add a completion
> callback to the original Future that makes the asyncio Future ready and
> transfers the result/exception. This would have to use
> loop.call_soon_threadsafe() to transfer control from the exector thread to
> the thread where the loop is running.
It didn't occur to me that we can implement __await__ on concurrent.Future to integrate it *with* asyncio. I guess it makes sense (although we don't have this kind of integration in 3.4 with 'yield from')
> The only thing I don't know is whether it's possible for __await__ to
> return a Future.
It is -- we just have to return "iter(asyncio.Future())"
Please see the attached patch -- it needs some more tuning, but it demonstrates that the integration is possible.