Python 透过邮寄表格下载文件

有一个网站有一个我想下载的文件列表。为了简化这个过程，我试着写一个脚本来帮我完成。（尽管我可以同时选择多个选项，但单击“提交”仅下载第一个文件）

网页url webpage/list.php与表单中的操作不同。我不确定在这里发布实际url的政策是什么

<form action="webpage/data.php" method="post">
  <table align="center">
    <tbody>
      <tr><td>
        <select name="data[]" size="8" multiple="multiple">
          <option value="downloadable_file1.tar">Downloadable file1</option>
          <option value="downloadable_file2.tar">Downloadable file2</option>
          <option value="downloadable_file3.tar">Downloadable file3</option>
        </select>
      </td></tr>
    </tbody>
  </table>
  <input type="submit">
</form>

当运行脚本时，服务器似乎没有确认请求，只是为我提供带有文件列表的相同网页。有没有我错过的选择？可能有som重定向问题吗

这是我使用Chrome时获得的信息：

Request URL:webpage/data.php  
Request Method:POST  
Status Code:200 OK  

Accept:text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8  
Accept-Charset:ISO-8859-1,utf-8;q=0.7,*;q=0.3  
Accept-Encoding:gzip,deflate,sdch  
Accept-Language:sv-SE,sv;q=0.8,en-US;q=0.6,en;q=0.4  
Cache-Control:max-age=0  
Connection:keep-alive  
Content-Length:26  
Content-Type:application/x-www-form-urlencoded  
Host:webpage 
Origin:webpage  
Referer:webpage/list.php  
User-Agent:Mozilla/5.0 (Macintosh; Intel Mac OS X 10_6_8) AppleWebKit/537.22 (KHTML, like Gecko) Chrome/25.0.1364.172 Safari/537.22  
data[]:downloadable_file1.tar  

Accept-Ranges:bytes  
Cache-control:private  
Connection:Keep-Alive  
Content-Disposition:attachment; filename="downloadable_file1.tar.gz"  
Content-Length:1043436  
Content-Transfer-Encoding:binary  
Content-Type:application/x-gzip  
Date:Tue, 26 Mar 2013 20:18:58 GMT  
Expires:Mon, 26 Jul 1997 05:00:00 GMT  
Keep-Alive:timeout=5, max=100  
Pragma:private  
Server:Apache/2.2.9 (FreeBSD) mod_ssl/2.2.9 OpenSSL/0.9.7e-p1 DAV/2 PHP/5.2.6 with Suhosin-Patch
X-Powered-By:PHP/5.2.6  

该行：

req = urllib2.Request('webpage/list.php')

正在请求原始网页，但表单将数据发布到

webpage/data.php

。这个效果更好吗

req = urllib2.Request('webpage/data.php')

---

您应该考虑使用“请求”库：

我相信这将通过使用请求库实现：

data={'data[]':'downloadable_file1.tar'}
req = requests.post('webpage/data.php', data)
with open('file.data', 'wb') as file:
    file.write(req.content)

data={'data[]':'downloadable_file1.tar'}
req = requests.post('webpage/data.php', data)
with open('file.data', 'wb') as file:
    file.write(req.content)