Question

我正在研究一个小的Python脚本，该脚本使用wget从我的大学的网站下载了一些文件。我感兴趣的文件是按顺序存储的，其中第一个文件的链接是： http://vlibcm.mmu.edu.my//xzamp/gxzam.php?action=37158.pdf

，然后链接到其他文件，如下所示：

http://vlibcm.mmu.edu.my//xzamp/gxzam.php?action=37159.pdf

http://vlibcm.mmu.edu.my//xzamp/gxzam.php?action=37160.pdf

，因此文件号每次增加1。

这是我为此编写的Python脚本：

import wget, os, sys

BaseURL = "http://vlibcm.mmu.edu.my//xzamp/gxzam.php?action="
BaseNumber= 37158
FullURL = ''

DownloadLocation = os.path.dirname(os.path.realpath(__file__))

for i in range (3):
    FullURL = BaseURL + str(BaseNumber + i) + '.pdf'
    print ("Working on:", FullURL)
    wget.download(FullURL, DownloadLocation)

运行此脚本时，出现以下错误：

Downloading currently: http://vlibcm.mmu.edu.my//xzamp/gxzam.php?action=37158.pdf
Traceback (most recent call last):
  File "main.py", line 12, in <module>    wget.download(FullURL, DownloadLocation)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\site-packages\wget.py", line 526, in download 
    (tmpfile, headers) = ulib.urlretrieve(binurl, tmpfile, callback)  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 247, in urlretrieve  
    with contextlib.closing(urlopen(url, data)) as fp:
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 222, in urlopen          return opener.open(url, data, timeout)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 531, in open
    response = meth(req, response)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 563, in error        
    result = self._call_chain(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 503, in _call_chain  
    result = func(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 755, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 531, in open
    response = meth(req, response)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 563, in error
    result = self._call_chain(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 503, in _call_chain
    result = func(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 755, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 531, in open
    response = meth(req, response)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 563, in error
    result = self._call_chain(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 503, in _call_chain
    result = func(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 755, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 531, in open
    response = meth(req, response)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 563, in error
    result = self._call_chain(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 503, in _call_chain
    result = func(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 755, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 531, in open
    response = meth(req, response)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 641, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 563, in error
    result = self._call_chain(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 503, in _call_chain
    result = func(*args)
  File "C:\Users\MainUser\AppData\Local\Programs\Python\Python37-32\lib\urllib\request.py", line 745, in http_error_302
    self.inf_msg + msg, headers, fp)
urllib.error.HTTPError: HTTP Error 302: The HTTP server returned a redirect error that would lead to an infinite loop.
The last 30x error message was:
Found

我要注意两点：

我可以使用IDM或浏览器下载它
要从大学的网站下载文件，必须建立VPN连接。我已连接到大学的VPN。

Answer 1

urllib中的错误显示HTTP错误302。在此处https://en.wikipedia.org/wiki/HTTP_302了解有关HTTP错误302的更多信息。

您可以先在浏览器上进行调试，以确保文件在服务器上可用。

Python中的wget无法下载我想要的文件

1 个答案: