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Re: Question about asyncio and blocking operations

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  Re: Question about asyncio and blocking operations "Frank Millman" <frank@chagford.com> - 2016-01-28 11:13 +0200

#102176 — Re: Question about asyncio and blocking operations

"Ian Kelly"  wrote in message 
news:CALwzidkr-fT6S6wH2caNaxyQvUdAw=x7XDqkqOfNRrwzwnjvOQ@mail.gmail.com...
>
> On Wed, Jan 27, 2016 at 10:14 AM, Ian Kelly <ian.g.kelly@gmail.com> wrote:
> > Unfortunately this doesn't actually work at present.
> > EventLoop.run_in_executor swallows the StopIteration exception and
> > just returns None, which I assume is a bug.
>
> http://bugs.python.org/issue26221
>

Thanks for that. Fascinating discussion between you and GvR.

Reading it gave me an idea.

Run the database handler in a separate thread. Use a queue.Queue to send 
requests to the handler. Use an asyncio.Queue to send results back to the 
caller, which can call 'await q.get()'.

I ran a quick test and it seems to work. What do you think?

Frank

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