从URL下载压缩的zip文件

Question

我有一个问题声明，我必须登录到一个网站，然后下载一个zip文件。我已经写了下面的代码到目前为止登录到网站（能够打印认证成功的消息）和创建一个会话。现在如何下载zip文件？在

import requests
import urllib
import urllib.request
import zipfile
import io
import shutil

post_login_url = 'https://www.ims-dm.com/mvc/page/customer-sign-in/cgi/cookie.php' 
request_url = 'http://www.ims-dm.com/cgi/securedownload.php?p=WPNFTPD#prodtype=wpn/WPN-FULL-20180306.TXT.zip'

payload = { 
         'sendusername':'xxxxxxxxxx', 
         'password':'xxxxxx'
} 

with requests.Session() as session:
    post = session.post(post_login_url,data=payload)    
    if post.status_code == 200:
        print("Authentication sucessful !!")
        url = session.get(request_url)