ValueError:check_hostname 需要 server_hostname

ValueError:check_hostname 需要 server_hostname

我打算使用下面显示的代码和 python 3.8.5 在我的计算机上安装 pandas 和 epanettools,但我收到了一个错误异常。

代码:

 pip install epanettools

pip install pandas

实际上,我可以在我的旧电脑上安装 epanettools,我买了一台新电脑,我想在我的新电脑上做同样的事情,但是它没有用,运行上面代码后出现如下错误异常:

错误:异常:

 ERROR: Exception:

Traceback (most recent call last):

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\cli\base_command.py", line 180, in _main

status = self.run(options, args)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\cli\req_command.py", line 204, in wrapper

return func(self, options, args)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\commands\install.py", line 318, in run

requirement_set = resolver.resolve(

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\resolution\resolvelib\resolver.py", line 127, in resolve

result = self._result = resolver.resolve(

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\resolvelib\resolvers.py", line 473, in resolve

state = resolution.resolve(requirements, max_rounds=max_rounds)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\resolvelib\resolvers.py", line 341, in resolve

name, crit = self._merge_into_criterion(r, parent=None)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\resolvelib\resolvers.py", line 172, in _merge_into_criterion

if not criterion.candidates:

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\resolvelib\structs.py", line 139, in __bool__

return bool(self._sequence)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\resolution\resolvelib\found_candidates.py", line 143, in __bool__

return any(self)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\resolution\resolvelib\found_candidates.py", line 129, in <genexpr>

return (c for c in iterator if id(c) not in self._incompatible_ids)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\resolution\resolvelib\found_candidates.py", line 30, in _iter_built

for version, func in infos:

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\resolution\resolvelib\factory.py", line 258, in iter_index_candidate_infos

result = self._finder.find_best_candidate(

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\index\package_finder.py", line 879, in find_best_candidate

candidates = self.find_all_candidates(project_name)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\index\package_finder.py", line 824, in find_all_candidates

page_candidates = list(page_candidates_it)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\index\sources.py", line 134, in page_candidates

yield from self._candidates_from_page(self._link)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\index\package_finder.py", line 783, in process_project_url

html_page = self._link_collector.fetch_page(project_url)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\index\collector.py", line 512, in fetch_page

return _get_html_page(location, session=self.session)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\index\collector.py", line 422, in _get_html_page

resp = _get_html_response(url, session=session)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\index\collector.py", line 120, in _get_html_response

resp = session.get(

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\requests\sessions.py", line 555, in get

return self.request('GET', url, **kwargs)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_internal\network\session.py", line 449, in request

return super().request(method, url, *args, **kwargs)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\requests\sessions.py", line 542, in request

resp = self.send(prep, **send_kwargs)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\requests\sessions.py", line 655, in send

r = adapter.send(request, **kwargs)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\cachecontrol\adapter.py", line 53, in send

resp = super(CacheControlAdapter, self).send(request, **kw)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\requests\adapters.py", line 439, in send

resp = conn.urlopen(

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\urllib3\connectionpool.py", line 696, in urlopen

self._prepare_proxy(conn)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\urllib3\connectionpool.py", line 964, in _prepare_proxy

conn.connect()

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\urllib3\connection.py", line 359, in connect

conn = self._connect_tls_proxy(hostname, conn)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\urllib3\connection.py", line 500, in _connect_tls_proxy

return ssl_wrap_socket(

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\urllib3\util\ssl_.py", line 432, in ssl_wrap_socket

ssl_sock = _ssl_wrap_socket_impl(sock, context, tls_in_tls)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\site-packages\pip_vendor\urllib3\util\ssl_.py", line 474, in _ssl_wrap_socket_impl

return ssl_context.wrap_socket(sock)

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\ssl.py", line 500, in wrap_socket

return self.sslsocket_class._create(

File "c:\users\ziyuan\appdata\local\programs\python\python38\lib\ssl.py", line 997, in _create

raise ValueError("check_hostname requires server_hostname")

ValueError: check_hostname requires server_hostname

你能告诉我如何解决这个错误吗?如果有任何建议,请多多指教!

原文由 czy 发布,翻译遵循 CC BY-SA 4.0 许可协议


回答:

在 Linux 上,可以通过在代理设置环境变量 export https_proxy=http://123.123.123.123:8888httphttps 来解决问题。请注意,它是 https 的代理设置,但使用了 http 地址。

原文由 S.V 发布,翻译遵循 CC BY-SA 4.0 许可协议

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