python-3.x - WinError 10061 - 无法建立连接

Question

我正在调试一个简单的程序，该程序过去一直有效。我已经挑出了发生错误的指令，但我无法弄清楚是什么触发了它。我已阅读与 WinError 10061 相关的所有问题，但没有看到明确的答案

urllib.request.urlopen('http://www.wikipedia.org/')
Traceback (most recent call last):
File "C:\Python33\lib\urllib\request.py", line 1248, in do_open    h.request(req.get_method(), req.selector, req.data, headers)
File "C:\Python33\lib\http\client.py", line 1061, in request    self._send_request(method, url, body, headers)
File "C:\Python33\lib\http\client.py", line 1099, in _send_request    self.endheaders(body)
File "C:\Python33\lib\http\client.py", line 1057, in endheaders  self._send_output(message_body)
File "C:\Python33\lib\http\client.py", line 902, in _send_output    self.send(msg)
File "C:\Python33\lib\http\client.py", line 840, in send    self.connect()
File "C:\Python33\lib\http\client.py", line 818, in connect    self.timeout, self.source_address)
File "C:\Python33\lib\socket.py", line 435, in create_connection    raise err
File "C:\Python33\lib\socket.py", line 426, in create_connection    sock.connect(sa)
ConnectionRefusedError: [WinError 10061] No connection could be made because the target machine actively refused it

During handling of the above exception, another exception occurred: 

Traceback (most recent call last):
File "<pyshell#7>", line 1, in <module>
urllib.request.urlopen('http://www.wikipedia.org/')
File "C:\Python33\lib\urllib\request.py", line 156, in urlopen   return opener.open(url, data, timeout)
File "C:\Python33\lib\urllib\request.py", line 469, in open    response = self._open(req, data)
File "C:\Python33\lib\urllib\request.py", line 487, in _open    '_open', req)
File "C:\Python33\lib\urllib\request.py", line 447, in _call_chain    result = func(*args)
File "C:\Python33\lib\urllib\request.py", line 1268, in http_open    return self.do_open(http.client.HTTPConnection, req)
File "C:\Python33\lib\urllib\request.py", line 1251, in do_open    raise URLError(err)
urllib.error.URLError: <urlopen error [WinError 10061] No connection could be made because the target machine actively refused it>

我在 Windows 8 中运行 Python 3。我尝试关闭防火墙，正如一些人建议的那样，但没有任何变化。我还尝试将 Python 添加到防火墙允许的应用程序列表中。顺便说一下，直到几天前，当我从 PC 中删除了一些应用程序时，程序行才没有任何问题。

Answer 1

原来，Internet 属性、连接选项卡、局域网设置被设置为代理服务器。我将其更改为自动检测设置，然后一切重新开始正常工作。