python with 线程锁

import threading
import time

num = 0  # 全局变量多个线程可以读写，传递数据
mutex = threading.RLock()  # 创建一个锁


class Mythread(threading.Thread):
    def run(self):
        global num
        with mutex:  # with RLock的作用相当于自动获取和释放锁(资源)
            for i in range(1000):  # 锁定期间，其他线程不可以干活
                num += 1
        print(num)


mythread = []

for i in range(5):
    t = Mythread()
    t.start()
    mythread.append(t)
for t in mythread:
    t.join()
print("ceshi")

import threading
import time

num = 0  # 全局变量多个线程可以读写，传递数据

class Mythread():
    mutex = threading.RLock()  # 创建一个类属性锁

    def run(self):
        global num
        with mutex:  # with RLock的作用相当于自动获取和释放锁(资源)
            for i in range(1000):  # 锁定期间，其他线程不可以干活
                num += 1
        print(num)


mythread = []
t=Mythread()
t.run()
print("ceshi")