[Python-ideas] Allow creation of polymorph function (async function executable syncronously)

[Nathaniel Smith]

On Wed, Mar 6, 2019 at 4:37 PM pylang <pylang3 at gmail.com> wrote:
>> def maybe_async(fn):
>>     @functools.wraps(fn)
>>     def wrapper(*args, **kwargs):
>>         coro = fn(*args, **kwargs)
>>         if asyncio.get_running_loop() is not None:
>>             return coro
>>         else:
>>             return await coro
>
> I was unable to run his example as-is (in Python 3.6 at least) since the `await` keyword is only permitted inside an `async def` function.

Oh yeah, that was a brain fart. I meant to write:

def maybe_async(fn):
    @functools.wraps(fn)
    def wrapper(*args, **kwargs):
        coro = fn(*args, **kwargs)
        if asyncio.get_running_loop() is not None:
            return coro
        else:
            return asyncio.run(coro)

-n

-- 
Nathaniel J. Smith -- https://vorpus.org