python自动化测试-D9-学习笔记之二（线程锁）

import threading
from threading import Lock

num = 0
lock = Lock()  # 申请一把锁

def run():
   global num
   lock.acquire()  # 加锁
   num += 1
   lock.release()  # 解锁

lis = []
for i in range(5):
   t = threading.Thread(target=run)
   t.start()
   lis.append(t)
for t in lis:
   t.join()
print('over', num)