Question

我正在尝试使用此网址执行GET请求：

http://g.api.mega.co.nz

当请求给我以下错误时：

>>> r = requests.get("http://g.api.mega.co.nz")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python3/dist-packages/requests/api.py", line 67, in get
    return request('get', url, params=params, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/api.py", line 53, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 468, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 597, in send
    history = [resp for resp in gen] if allow_redirects else []
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 597, in <listcomp>
    history = [resp for resp in gen] if allow_redirects else []
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 195, in resolve_redirects
    **adapter_kwargs
  File "/usr/lib/python3/dist-packages/requests/sessions.py", line 576, in send
    r = adapter.send(request, **kwargs)
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 343, in send
    conn = self.get_connection(request.url, proxies)
  File "/usr/lib/python3/dist-packages/requests/adapters.py", line 250, in get_connection
    proxy = select_proxy(url, proxies)
  File "/usr/lib/python3/dist-packages/requests/utils.py", line 575, in select_proxy
    proxy = proxies.get(urlparts.scheme+'://'+urlparts.hostname)
TypeError: Can't convert 'NoneType' object to str implicitly
>>>

我在python2.7和python3.5中对其进行了测试，两者都在语义上给出了相同的错误。我认为长子域链给出了错误，但我通过使用通配符dns配置在我的服务器上使用长子域链进行测试而反驳了这一点。

我可以看到host g.api.mega.co.nz该网址是lu.api.mega.co.nz.的别名

尝试使用curl --head和http访问该网址时，会给我以下内容：

HTTP/1.1 301 Moved Permanently
Content-Length: 0
Location: https://
Access-Control-Allow-Origin: *
Access-Control-Allow-Headers: Content-Type, MEGA-Chrome-Antileak
Access-Control-Expose-Headers: Original-Content-Length
Access-Control-Max-Age: 86400

当我尝试使用https访问因为301状态代码时，我得到一个空响应。

情节变浓。

Answer 1

根据requests/urllib库，当服务无法重定向到严格说出无效位置时，会发生此错误。

Simliar： LocationValueError when using python requests module

每次我遇到这个服务时都会提供https，这可能是这个问题的根源。

在上面的示例中，服务重定向到Location: https://，其中requests会将主机名解析为导致错误的None。

在另一个示例sensetime.com中，网址重定向到：

...
< Connection: keep-alive
< Location: https:www.sensetime.com/
<
...

哪个urllib无法解析（因为缺少反斜杠而失败。

你应该做什么/我做了什么：

做一个全能的，把这些网址放在你遇到的地方的某个单独的地方，稍后你可以通过https来连接它们
更新你的请求库（pip install --upgrade requests）：我最新的版本给了我一个不同的错误信息，这让我找到了这个问题的答案

请求：无法转换＆＃39; NoneType＆＃39;隐含地反对str

1 个答案: