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(120,watch_func,("is running...")) t.start() def watch_func(msg): print "I'm watch_func,",msg if get_process_count('main.exe') == 0 : print subprocess.Popen([r'D:\shuaji\bin\main.exe']) timer_start() if __name__ == "__main__": timer_start() while True: time.sleep(1)