Support for async API calls

[csparpa]

This would leverage Python 3.5's async/await features

API calls could just be async functions (aka coroutine functions) that pyowm returns and then get executed on an eventloop provided by client code

note: asyncio is part of the python std library only from 3.5 so 3.4 doesn't feature it (but asyncio can be imported as an external dependency)

Design solution

Make PyOWM 2.x sync functions a "sub-case" of async functions as stated here: https://stackoverflow.com/questions/53521716/enhance-synchronous-software-api-to-allow-asynchronous-consuming/53523001#53523001

[csparpa]

Take a look here for sync/async library calls handling: https://hackernoon.com/controlling-python-async-creep-ec0a0f4b79ba

[Harmon758]

This is something I'd be interested in. Any specific reason it's now wontfix?

[csparpa]

@Harmon758 No user interest so far.. and then you shouted ;-) I don't want to rule this feature out if it eventually proves useful !

[y2kbadbug]

I'll throw my hat into the game, I am interested as my bot I plan on using OWM with is already async.

[aitorllj93]

@csparpa I personally would appreciate if you mind reopening this

[csparpa]

@aitorllj93 @y2kbadbug @Harmon758 open again :)

Are you able to collaborate on this?

[y2kbadbug]

So currently I implemented this on my own vanilla script using Python Treq to make the asynchronous calls. It is written on top of Twisted.

https://pypi.org/project/treq/

This might not be ideal for this project as the level of dependencies it can add, but when I get some free time I'll be happy to poke at a solution for this project.