ubuntu pip 报错

错误如下：

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/dist-packages/pkg_resources/__init__.py", line 70, in <module>    import packaging.versionImportError: No module named packaging.version

解决方法：

sudo apt-get purge python-pipwget https://bootstrap.pypa.io/get-pip.pypython get-pip.py

参考http://askubuntu.com/questions/561377/pip-wont-run-throws-errors-instead