threading_daemon _demo

import threading, time


def dmn():
    print('dmn start...')
    time.sleep(2)
    print('dmn end.')


def ndmn():
    print('ndmn start...')
    time.sleep(1)
    print('ndmn end.')

# 守护线程即后台线程，主线程销毁后守护线程也会跟着销毁
# start...
# dmn start...
# ndmn start...
# end.
# ndmn end

d = threading.Thread(target=dmn)
d.daemon = True
n = threading.Thread(target=ndmn)
print('start...')
d.start()
n.start()
print('end.')