查看进程id的方法

from multiprocessing import Process
import time
import os
def run():
 print('%s is runing,parent is <%s>'%(os.getpid(), os.getppid()))
 time.sleep(3)
 print('%s is down, parent is <%s>'%(os.getpid(), os.getppid()))
if __name__ =='__main__':
 p = Process(target=run)
 p.start()
 print('主',os.getppid())
#os.getppid() 查看主进程的id
#os.getpid() 查看子进程的id