python3 守护进程

macname@MacdeMBP Desktop % 
macname@MacdeMBP Desktop % cat test.py

import time
from multiprocessing import Process


def func(name, sec):
    print(name, 123)
    time.sleep(sec)
    print(name, "123end")

if __name__ == ‘__main__‘:
    p1 = Process(target=func, args=("进程1", 1))
    p2 = Process(target=func, args=("进程2", 2))
    p3 = Process(target=func, args=("进程3", 3))
    p1.daemon = True  # 必须在start()之前设置守护进程
    p1.start()
    p2.start()
    p3.start()
    time.sleep(0.5)
    print("主进程结束，主进程还得等待其他子进程（非守护进程）结束才行")

macname@MacdeMBP Desktop % python3 test.py
进程1 123
进程2 123
进程3 123
主进程结束，主进程还得等待其他子进程（非守护进程）结束才行
进程2 123end
进程3 123end
macname@MacdeMBP Desktop %