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