python进程锁

import time
import threading
import multiprocessing
lock = multiprocessing.RLock()
def task(arg):
  print('进程来了')
  lock.acquire()
  time.sleep(2)
  print(arg)
  lock.release()
if __name__ == '__main__':
  p1 = multiprocessing.Process(target=task,args=(1,))
  p1.start()

  p2 = multiprocessing.Process(target=task, args=(2,))
  p2.start()  

和线程锁一样,对照线程锁学习即可