python 多线程笔记（1）-- 概念

import time

songs = [‘爱情买卖‘,‘朋友‘,‘回家过年‘,‘好日子‘]
movies = [‘阿凡达‘,‘猩球崛起‘]

def music(songs):
    for s in songs:
        print("开始听歌曲：%s \t-- %s" %(s, time.ctime()))
        time.sleep(3)

def movie(movies):
    for m in movies:
        print("开始看电影：%s \t-- %s" %(m, time.ctime()))
        time.sleep(5)


if __name__ == ‘__main__‘:
    # 直接
    start = time.clock()

    music(songs)
    movie(movies)

    print("全部结束，耗时：{:.2f}".format(time.clock() - start))

import threading
import time

songs = [‘爱情买卖‘,‘朋友‘,‘回家过年‘,‘好日子‘]
movies = [‘阿凡达‘,‘猩球崛起‘]

def music(songs):
    for s in songs:
        print("开始听歌曲：%s \t-- %s" %(s, time.ctime()))
        time.sleep(3)

def movie(movies):
    for m in movies:
        print("开始看电影：%s \t-- %s" %(m, time.ctime()))
        time.sleep(5)


if __name__ == ‘__main__‘:
    
    start = time.clock()
    
    # 创建线程
    t1 = threading.Thread(target=music, args=(songs,))  # 听歌
    t2 = threading.Thread(target=movie, args=(movies,)) # 看电影
    
    # 启动所有线程
    for t in [t1, t2]:
        t.setDaemon(True) # 守护线程
        t.start()
        #t.join() 不要这样
    #t.join() 也不要这样
    
    # 阻塞主线程，直到所有子线程退出
    for t in [t1, t2]:
        t.join()
    
    print("全部线程结束，耗时：{:.2f}".format(time.clock() - start))