[libvirt] [PATCH python] libvirtaio: Fix compat with python 3.7

[Cole Robinson]

On 06/27/2018 07:50 AM, Andrea Bolognani wrote:
> On Mon, 2018-06-25 at 14:35 -0400, Cole Robinson wrote:
> [...]
>> -try:
>> -    from asyncio import ensure_future
>> -except ImportError:
>> -    from asyncio import async as ensure_future
>> +# python < 3.4.4: we want 'async'
>> +# python >= 3.4.4 < 3.7, we want 'ensure_future'
>> +# python >= 3.7, 'async' is a reserved keyword, so we can't import it
>> +ensure_future = getattr(asyncio, "ensure_future", None)
>> +if not ensure_future:
>> +    ensure_future = getattr(asyncio, "async")
> 
> Python is not exactly my forte, but the above makes sense to me
> and it stood up to some testing across all platforms supported by
> libvirt, so
> 
>   Reviewed-by: Andrea Bolognani <abologna at redhat.com>
> 
> One nit is that the comment above the code doesn't IMHO describe
> the situation properly: I would have worded it along the lines of
> 
>   # Python < 3.4.4 doesn't have 'ensure_future', so we have to fall
>   # back to 'async'; however, since 'async' is a reserved keyword
>   # in Python >= 3.7, we can't perform a straightforward import and
>   # we have to resort to getattr() instead
> 
> I leave it up to you whether or not you want to reword the comment.
> 

I used your comment and pushed it now

Thanks,
Cole