url网络通信模块

本机ip地址查询

网络通信模块urllib 是用来查询网页中资源的路径的方式

from urllib import request

from multiprocessing import Process

def downloader(url):

    #文件名
    file_name=url.split("/")[-1]

    #网络请求
    response = request.urlopen(url)

    content = response.read()

    #保存
    with open(file_name,"wb") as fb:
        fb.write(content)

if __name__ == '__main__':
    for i in range(1,5):
        url = 'http://www.langlang2017.com/img/banner'+str(i)+".png"
        print(url)
        p = Process(target=downloader,args=(url,))#downloader后面绝对不能加括号
        p.start()