python - 导入错误 : cannot import name ProtocolError

Question

最近我在使用 pip 时遇到困难，每当我尝试发出 pip 命令时，我都会收到以下错误消息。

File "/usr/bin/pip", line 9, in <module>
    load_entry_point('pip==1.5', 'console_scripts', 'pip2.7')()
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 353, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 2302, in load_entry_point
    return ep.load()
  File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 2029, in load
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])
  File "/usr/lib/python2.7/site-packages/pip/__init__.py", line 11, in <module>
    from pip.vcs import git, mercurial, subversion, bazaar  # noqa
  File "/usr/lib/python2.7/site-packages/pip/vcs/mercurial.py", line 9, in <module>
    from pip.download import path_to_url
  File "/usr/lib/python2.7/site-packages/pip/download.py", line 22, in <module>
    from pip._vendor import requests
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/__init__.py", line 58, in <module>
    from . import utils
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/utils.py", line 25, in <module>
    from .compat import parse_http_list as _parse_list_header
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/compat.py", line 7, in <module>
    from .packages import charade as chardet
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/packages/__init__.py", line 3, in <module>
    from . import urllib3
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/__init__.py", line 16, in <module>
    from .connectionpool import (
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/connectionpool.py", line 33, in <module>
    from .connection import (
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/connection.py", line 41, in <module>
    from .util import (
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/__init__.py", line 18, in <module>
    from .retry import Retry
  File "/usr/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/retry.py", line 4, in <module>
    from ..exceptions import (
ImportError: cannot import name ProtocolError

我使用的是 openSUSE SLES 12。

Answer 1

所以我努力寻找解决此错误的方法，因为我搜索的所有内容都没有帮助，直到我最终在 StackOverflow 上偶然发现了另一个 pip 相关问题的答案，它解决了我的错误。 How do I fix 'ImportError: cannot import name IncompleteRead'?

因此，要消除此错误消息，请发出以下命令。

easy_install -U pip