import asyncio


class NonTrueAwaitable:
    def __init__(self, inner):
        self.inner = inner

    def __bool__(self) -> bool:
        return False

    def __await__(self):
        val = yield from self.inner
        return val


def intermediary():
    async def inner():
        await asyncio.sleep(0.4)
        return 42
    return NonTrueAwaitable(inner())


async def run():
    return await intermediary()


print(asyncio.get_event_loop().run_until_complete(run()))