Python pip安装需要server_hostname [英] Python pip install requires server_hostname

问题描述

我在Linux上完成了pip的安装，pip list命令有效.但是使用pip install命令时，出现以下错误:

I finished installing pip on linux, the pip list command works. But when using the pip install command it got the following error:

Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/basecommand.py", line 232, in main
    status = self.run(options, args)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/commands/install.py", line 339, in run
    requirement_set.prepare_files(finder)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/req/req_set.py", line 333, in prepare_files
    upgrade=self.upgrade,
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/index.py", line 305, in find_requirement
    page = self._get_page(main_index_url, req)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/index.py", line 783, in _get_page
    return HTMLPage.get_page(link, req, session=self.session)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/index.py", line 872, in get_page
    "Cache-Control": "max-age=600",
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/requests/sessions.py", line 473, in get
    return self.request('GET', url, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/download.py", line 365, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/requests/sessions.py", line 461, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/requests/sessions.py", line 573, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/cachecontrol/adapter.py", line 43, in send
    resp = super(CacheControlAdapter, self).send(request, **kw)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/requests/adapters.py", line 370, in send
    timeout=timeout
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/requests/packages/urllib3/connectionpool.py", line 518, in urlopen
    body=body, headers=headers)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/requests/packages/urllib3/connectionpool.py", line 322, in _make_request
    self._validate_conn(conn)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/requests/packages/urllib3/connectionpool.py", line 727, in _validate_conn
    conn.connect()
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/requests/packages/urllib3/connection.py", line 238, in connect
    ssl_version=resolved_ssl_version)
  File "/usr/local/lib/python2.7/site-packages/pip-6.0.7-py2.7.egg/pip/_vendor/requests/packages/urllib3/util/ssl_.py", line 254, in ssl_wrap_socket
    return context.wrap_socket(sock)
  File "/usr/local/lib/python2.7/ssl.py", line 350, in wrap_socket
    _context=self)
  File "/usr/local/lib/python2.7/ssl.py", line 537, in __init__
    raise ValueError("check_hostname requires server_hostname")
ValueError: check_hostname requires server_hostname

我该如何解决?

推荐答案

pip 6.1.0 具有已发布，解决了此问题.您可以升级:

pip 6.1.0 has been released, fixing this issue. You can upgrade with:

pip --trusted-host pypi.python.org install -U pip

进行自我升级.

原始答案:

这是由于Python 2.7.9的更改引起的，urllib3需要对此进行说明.请参阅该项目的问题#543 .您的OpenSSL库不支持SNI，这意味着urllib3不会将主机名传递给SSL套接字包装器，但是Python 2.7.9希望无论如何出于不同的目的传递主机名.

This is caused by a change in Python 2.7.9, which urllib3 needs to account for. See issue #543 for that project. Your OpenSSL libraries do not support SNI, which means urllib3 won't pass in the host name to the SSL socket wrapper, but Python 2.7.9 expects the hostname to be passed in anyway for different purposes.

urllib3由requests间接使用(请参见 requests问题2435 )， pip正在使用转弯.

urllib3 is indirectly used by requests (see requests issue 2435), which in turn is being used by pip.

我已经打开了门票，以便从pip的角度进行跟踪.

I've opened a ticket to track this from pip's perspective.

潜在问题已由项目维护人员修复，正在等待新版本发布.如果您不耐烦，可以安装pip的当前开发版本:

The underlying issues have been fixed by the project maintainers, and awaiting a new release. You could install the current development version of pip if you are impatient:

pip install --trusted-host=github.com -U https://github.com/pypa/pip/archive/develop.zip

这将安装pip-6.1.0.dev0，当6.1.0完全发布时，您可以再次使用pip install -U pip进行升级，以从PyPI获得最终版本.

This'll install pip-6.1.0.dev0, when 6.1.0 is fully released you can upgrade again with pip install -U pip to get the final release from PyPI.

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