Function supervisor

19-concurrency/primes/spinner_prime_async_nap.py:45–50

(n: int)

    return await is_prime(n)

async def supervisor(n: int) -> int:
    spinner = asyncio.create_task(spin('thinking!'))
    print('spinner object:', spinner)
    result = await check(n)
    spinner.cancel()
    return result

def main() -> None:
    n = 5_000_111_000_222_021