线程标准库模块--threading（之线程互斥机制--线程锁Lock）

线程锁

1、创建线程对象

　　lock = threading.Lock()

2、上锁

　　lock.acquire()

3、解锁

　　lock.release()

　　with lock 上锁

import threading 

a = b = 0 

lock = threading.Lock()

def value():
    while True:
        lock.acquire()
        if a != b:
            print("a = %d,b = %d"%(a,b))
        lock.release()

t = threading.Thread(target = value)
t.start()

while True:
    lock.acquire()
    a += 1
    b += 1
    lock.release()

t.join()