python - pip 损坏，重新安装不起作用。 EC2

Question

我现在在 EC2 上使用 pip，python 版本是 2.7。 'sudo pip' 突然不再工作了。

[ec2-user@ip-172-31-17-194 ~]$ sudo pip install validate_email
Traceback (most recent call last):
  File "/usr/bin/pip", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3138, in <module>
    @_call_aside
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3124, in _call_aside
    f(*args, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 3151, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 663, in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 676, in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 849, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'pip==6.1.1' distribution was not found and is required by the application
[ec2-user@ip-172-31-17-194 ~]$ which pip
/usr/local/bin/pip

Answer 1

首先，which pip 不会返回与 sudo which pip 相同的结果，因此您应该先检查一下。

您也可以考虑完全不以 sudo 方式运行 pip。 Is it acceptable & safe to run pip install under sudo?

第二，你能试试这个吗:

easy_install --upgrade pip

如果你在这里遇到错误(关于 pip 的 wheel 支持)，试试这个，然后再次运行上面的命令:

easy_install -U setuptools