相关疑难解决方法(0)

我一直在尝试多处理,并使用守护进程运行到一个mindblock.

我有一个守护进程和一个非守护进程,守护进程每隔一秒无限期地发出输出,而非守护进程在启动时立即打印输出,休眠3秒,然后再次打印并返回.

问题是,守护进程的预期输出根本没有显示出来.

回顾过去关于守护进程的SO问题,常见问题似乎是在守护进程之前结束的其他进程,或者需要刷新以显示输出的stdout.两者都(我认为)已得到解决,但我仍然只看到来自非守护进程的打印输出.

代码:

from multiprocessing import Process, current_process
import sys
import time

def worker():
    """
    Announce that the process has started, sleep 3 seconds
    then announce that the process is ending.
    """
    name = current_process().name
    print name, 'starting...'
    sys.stdout.flush()

    time.sleep(3)
    print name, 'ending...'
    sys.stdout.flush()

    return


def daemon():
    """
    Announce that the process has started, beep, then beep
    once every second
    """
    name = current_process().name
    print name, 'starting...'
    print 'beep...'
    sys.stdout.flush()

    while True:
        time.sleep(1)
        print 'beep...'
        sys.stdout.flush() …