python怎么使用代理ip

# -*- coding: UTF-8 -*-
from urllib import request
 
if __name__ == "__main__":
    #访问网址
    url = 'http://www.whatismyip.com.tw/'
    #这是代理IP
    ip = '27.155.101.233:3128'
    #设置代理ip访问方式，http和https
    proxy = {'http':ip,'https':ip}
    #创建ProxyHandler
    proxy_support = request.ProxyHandler(proxy)
    #创建Opener
    opener = request.build_opener(proxy_support)
    #添加User Angent
    opener.addheaders = [('User-Agent','Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.221 Safari/537.36 SE 2.X MetaSr 1.0')]
    #安装OPener
    request.install_opener(opener)
    #使用自己安装好的Opener
    response = request.urlopen(url)
    #读取相应信息并解码
    html = response.read().decode("utf-8")
    #打印信息
    print(html)

whatismyip是一个查询ip的网站，上面代码我使用了27.155.101.233，端口号是3128对这个网站进行访问