How can I write asyncio coroutines that optionally act as regular functions?

Question

I\'m writing a library that I\'d like end-users to be able to optionally use as if its methods and functions were not coroutines.

For example, given this function:

Answer 1

You need two functions -- asynchronous coroutine and synchronous regular function:

@asyncio.coroutine
def async_gettter():
    return (yield from http_client.get('http://example.com'))

def sync_getter()
    return asyncio.get_event_loop().run_until_complete(async_getter())

magically_determine_if_being_yielded_from() is actually event_loop.is_running() but I strongly don't recommend to mix sync and async code in the same function.