python3 Process中的terminate和is_alive

terminate 关闭进程,不会立即关闭,有个等着操作系统去关闭这个进程的时间,所以is_alive立刻查看的结果可能还是存活，但是稍微等一会，就被关掉了

 

# coding:utf-8
import time
from multiprocessing import Process


class MyProcess(Process):
    def run(self):
        print("子进程开始.")
        time.sleep(5)
        print("子进程结束.")


if __name__ == '__main__':
    p = MyProcess()
    p.start()
    time.sleep(1)
    p.terminate()
    print("is_alive:", p.is_alive())
    time.sleep(0.01)
    print("is_alive:", p.is_alive())


执行结果:
# 子进程开始.
# is_alive: True
# is_alive: False

 

转载于:https://www.cnblogs.com/lilyxiaoyy/p/10966923.html