python，利用requests re模块下载文件

使用python，利用requests re模块下载文件

import requests
import re
#获取url
url = "https://www.openvswitch.org/support/dist-docs/"

#获取数据
data = requests.get(url).text
#提取数据，(?P<url>.*?)将匹配的(.*?)的值付给变量url
result = re.findall(r'<a href="(?P<url>.*?).pdf">',data)
print(result)
for i in result:
    #拼接下载的链接
    new_url = url + i + ".pdf" 
    filename = i + ".pdf"
    #print(new_url)
    #访问连接
    result =  requests.get(new_url)
    #下载文件，并保存
    with open(filename,mode="wb") as f:
        f.write(result.content)