Question on asyncio

[Marko Rauhamaa]

Jonas Wielicki <jonas at wielicki.name>:

> On 23.02.2015 14:27, Marko Rauhamaa wrote:
>> pfranken85 at gmail.com:
>>> The corresponding call is a call to the python smbus library. It
>>> includes several sleeps (even though they are only about 50ms).
>>> Therefore I think it is worthwhile to encapsulate it into a coroutine.
>> 
>> Maybe. Then you'll probably have to rewrite smbus to work asyncio style.
>> Those sleeps would then be done as "yield from" statements.
>> 
>
> The manual has a word on this [1]. So I would suggest to use
> run_in_executor() instead of trashing and rewriting the whole smbus
> library.

Ok, that's always a fallback. I usually isolate such obnoxious function
calls in a process pool.

But that wouldn't be purely asyncio anymore.

One of the main offenders is the database libraries. They should
definitely provide nonblocking access.


Marko