python 监控进程

import threading
import time
import os
import subprocess


def get_process_count(imagename):
    p = os.popen('tasklist /FI "IMAGENAME eq %s"' % imagename)
    return p.read().count(imagename)


def timer_start():
    t = threading.Timer(1, watch_func, ("is running...",))
    t.start()


def watch_func(msg):
    print("I'm watch_func,", msg)
    if get_process_count('UE4Editor.exe') == 0:
        print(subprocess.Popen([r'E:\UE_4.19\Engine\Binaries\Win64\UE4Editor.exe']))
    timer_start()


if __name__ == '__main__':
    # print(get_process_count('UE4Editor.exe'))
    timer_start()
    while True:
        time.sleep(1)