urllib.error.HTTPError：HTTP错误403：使用unangle python 3.6时禁止使用

Question

这是我第一次尝试使用python，我试图使用外部库进行python 3.6的xml解析。

我收到的错误似乎与我的代码没有任何关系，我无法弄清楚错误输出中的问题是什么

我的代码：

import untangle
x = untangle.parse(r"C:\file.xml")

错误：

Traceback (most recent call last):
  File "C:/Project/Main.py", line 2, in <module>
    x = untangle.parse(r"C:\file.xml")
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\site-packages\untangle.py", line 177, in parse
    parser.parse(filename)
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\xml\sax\expatreader.py", line 111, in parse
    xmlreader.IncrementalParser.parse(self, source)
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\xml\sax\xmlreader.py", line 125, in parse
    self.feed(buffer)
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\xml\sax\expatreader.py", line 217, in feed
    self._parser.Parse(data, isFinal)
  File "..\Modules\pyexpat.c", line 668, in ExternalEntityRef
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\xml\sax\expatreader.py", line 413, in external_entity_ref
    "")
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\xml\sax\saxutils.py", line 364, in prepare_input_source
    f = urllib.request.urlopen(source.getSystemId())
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\urllib\request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\urllib\request.py", line 532, in open
    response = meth(req, response)
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\urllib\request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\urllib\request.py", line 570, in error
    return self._call_chain(*args)
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\urllib\request.py", line 504, in _call_chain
    result = func(*args)
  File "C:\Users\user\AppData\Local\Programs\Python\Python36\lib\urllib\request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden