升级到 ubuntu-16.10 后 Pip 不起作用 [英] Pip does not work after upgrade to ubuntu-16.10

问题描述

与 pip 一起运行命令会出现以下错误.即使命令 pip -V 也会产生以下错误.
我读到错误是由 setuptools 版本 31.0.0 引起的，它应该低于 28.0.0.但是我的 setuptools 版本是 26.1.1，它仍然给出相同的错误.

<前>回溯(最近一次调用最后一次):文件/usr/local/bin/pip"，第 7 行，在从 pip 导入主文件/usr/local/lib/python3.5/dist-packages/pip/__init__.py"，第26行，在从 pip.utils 导入 get_installed_distributions, get_prog文件/usr/local/lib/python3.5/dist-packages/pip/utils/__init__.py"，第27行，在从 pip._vendor 导入 pkg_resources文件/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py"，第3018行，在@_call_aside文件/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py"，第3004行，在_call_asidef(*args, **kwargs)文件/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py"，第 3046 行，在 _initialize_master_working_setdist.activate(替换=假)文件/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py"，第2578行，激活声明命名空间(包)文件/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py"，第2152行，在declare_namespace_handle_ns(packageName, path_item)文件/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py"，第2092行，_handle_ns_rebuild_mod_path(路径，包名，模块)文件/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py"，第2121行，在_rebuild_mod_pathorig_path.sort(key=position_in_sys_path)AttributeError: '_NamespacePath' 对象没有属性 'sort'

解决方案

我能找到的唯一解决方案是重新安装 pip.在您的终端上运行这些命令

• wget https://bootstrap.pypa.io/get-pip.py
• sudo -H python get-pip.py --prefix=/usr/local/

但是，这只适用于 pip，不适用于 pip3！

Running a command alongwith pip gives the following error. Even the command pip -V produces the following error.
I read that the error is due to setuptools version 31.0.0 and it should be lower than 28.0.0. But the version of my setuptools is 26.1.1 and it still gives the same error.

Traceback (most recent call last):
  File "/usr/local/bin/pip", line 7, in 
    from pip import main
  File "/usr/local/lib/python3.5/dist-packages/pip/__init__.py", line 26, in 
    from pip.utils import get_installed_distributions, get_prog
  File "/usr/local/lib/python3.5/dist-packages/pip/utils/__init__.py", line 27, in 
    from pip._vendor import pkg_resources
  File "/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 3018, in 
    @_call_aside
  File "/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 3004, in _call_aside
    f(*args, **kwargs)
  File "/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 3046, in _initialize_master_working_set
    dist.activate(replace=False)
  File "/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 2578, in activate
    declare_namespace(pkg)
  File "/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 2152, in declare_namespace
    _handle_ns(packageName, path_item)
  File "/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 2092, in _handle_ns
    _rebuild_mod_path(path, packageName, module)
  File "/usr/local/lib/python3.5/dist-packages/pip/_vendor/pkg_resources/__init__.py", line 2121, in _rebuild_mod_path
    orig_path.sort(key=position_in_sys_path)
AttributeError: '_NamespacePath' object has no attribute 'sort'

解决方案

The only solution I could find is reinstalling pip. Run these commands on your terminal

• wget https://bootstrap.pypa.io/get-pip.py
• sudo -H python get-pip.py --prefix=/usr/local/

However, this works only for pip, not pip3!

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