threading

threading.Lock  同步原语 -- 锁

需要共享的数据操作时用

【1】.acquire() 获得

【2】.release() 释放

【3】支持上下文操作 with lock：

import threading

import time

import random

eggs = []

lock - threading.Lock()

def put_egg (n, lst):

    lock.acqire()    

    for i in range (1,n+1)

        time.sleep(random,randint(0,2))

        lst.append(i)

    lock.release()

//或：

def put_egg (n, lst):

    with lock:   

        for i in range (1,n+1)

            time.sleep(random,randint(0,2))

            lst.append(i)

def main():

    treads = []

    for i in range (3):

        t - threading.Thread (target = put_egg, args = (5, eggs))

        threads.append(t)

    for t in threads:

        t.start()

    for t in threads:

        t.join()

    print(eggs)