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How to write python proxy ip

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Oct 28, 2020 am 10:22 AM

pythonproxy ip

python写代理ip的方法：首先创建代理ip对象，并定制一个opener对象；然后安装opener对象，以后的urlopen就一直使用这个代理地址。

How to write python proxy ip

python写代理ip的方法：

方法1：

先创建代理ip对象

proxy_support = urllib.request.ProxyHandler({&#39;https&#39;:&#39;117.64.149.137:808&#39;})

定制一个opener对象

opener = urllib.request.build_opener(proxy_support)

安装这个opener对象，以后的urlopen就一直使用这个代理地址了

urllib.request.install_opener(opener)

发出请求时，就是用到这个代理地址了

html = urllib.request.urlopen(&#39;xxxxxxxxxx&#39;).read()

方法2：

先创建代理ip对象

proxy_support = urllib.request.ProxyHandler({&#39;https&#39;:&#39;117.64.149.137:808&#39;})

定制一个opener对象

opener = urllib.request.build_opener(proxy_support)

这里可以直接使用opener对象发出请求

html = opener.open(&#39;xxxxxxxxx&#39;).read()

示例代码：

import urllib.request
#这一段三句话是为了请求时带上浏览器标识，因为有的网站看到是爬虫的标识直接返回403
#请求的网站不涉及到提交数据，所以没有给出data参数
url = &#39;https://whatismyipaddress.com/&#39;
header = {&#39;User-Agent&#39;:&#39;Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/71.0.3578.98 Safari/537.36&#39;}
req = urllib.request.Request(url,headers=header)
#使用代理和还原不使用代理的方法
#if语句相当于一个开关，不要写成True
use_proxy = urllib.request.ProxyHandler({&#39;https&#39;:&#39;117.64.149.137:808&#39;})
null_proxy = urllib.request.ProxyHandler()
if True:
    opener = urllib.request.build_opener(use_proxy)
else:
    opener = urllib.request.build_opener(null_proxy)
#根据上面的开关，安装的opener对象是否带有代理地址
urllib.request.install_opener(opener)
#获取返回结果
#同时可以使用html = opener.open(req).read()获取结果
html = urllib.request.urlopen(req).read()
#这网页返回页面的内容太多，在控制台不好查看，
#并且返回的内容是二进制格式，可以直接写入文件，当个网页查看
with open(&#39;E:\\whatismyip.html&#39;,&#39;wb&#39;) as file:
    file.write(html)
    print(&#39;OK&#39;)

相关免费学习推荐：python教程（视频）

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