human
I wrote the below code

    num_workers = random.choice(range(2, ((multiprocessing.cpu_count() * 2) + 1)))
    app = Sanic('test_multiprocessing')
    process_list = set()
    def stop_on_alarm(*args):
        for process in multiprocessing.active_children():
            process_list.add(process.pid)
            process.terminate()
    signal.signal(signal.SIGALRM, stop_on_alarm)
    signal.alarm(1)
    app.run(HOST, PORT, workers=num_workers)
    assert (len(process_list) == num_workers)

What's a good function header?
 ... Here's a good function header?
assistant
#Here's a good function header.

def test_multiprocessing():