python - 使用 urllib.request.urlopen() 时为 "HTTP Error 409: Conflict"

Question

在 Python 3.1 下，尝试运行此代码时:

from urllib import request

def test():
    request.urlopen("http://www.google.com")

test()

我收到 HTTP 409 错误。堆栈跟踪是:

Traceback (most recent call last):
  File "C:\Users\Beau\Python\pokescrape.py", line 6, in <module>
    test()
  File "C:\Users\Beau\Python\pokescrape.py", line 4, in test
    request.urlopen("http://www.google.com")
  File "C:\Program Files\Python\lib\urllib\request.py", line 119, in urlopen
    return _opener.open(url, data, timeout)
  File "C:\Program Files\Python\lib\urllib\request.py", line 353, in open
    response = meth(req, response)
  File "C:\Program Files\Python\lib\urllib\request.py", line 465, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Program Files\Python\lib\urllib\request.py", line 385, in error
    result = self._call_chain(*args)
  File "C:\Program Files\Python\lib\urllib\request.py", line 325, in _call_chain
    result = func(*args)
  File "C:\Program Files\Python\lib\urllib\request.py", line 560, in http_error_302
    return self.parent.open(new, timeout=req.timeout)
  File "C:\Program Files\Python\lib\urllib\request.py", line 353, in open
    response = meth(req, response)
  File "C:\Program Files\Python\lib\urllib\request.py", line 465, in http_response
    'http', request, response, code, msg, hdrs)
  File "C:\Program Files\Python\lib\urllib\request.py", line 391, in error
    return self._call_chain(*args)
  File "C:\Program Files\Python\lib\urllib\request.py", line 325, in _call_chain
    result = func(*args)
  File "C:\Program Files\Python\lib\urllib\request.py", line 473, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)

打印出来的实际错误是:

urllib.error.HTTPError: HTTP Error 409: Conflict

我通过配置脚本设置了代理；我没有遇到过有关互联网连接的问题。

到底为什么我会收到 HTTP 409 错误？

Answer 1

我也遇到了这个问题(也来自兰开斯特，碰巧)，发现如果我设置环境变量 http_proxy，Python 就会使用它。在本例中(在 Windows 上)它将是:

set http_proxy=http://wwwcache.lancs.ac.uk:8080

在 *nix 上:

export http_proxy=http://wwwcache.lancs.ac.uk:8080/

编辑:感谢 Beau Martínez 修复了 *nix。