pip安装错误解决：Could not install packages due to an EnvironmentError: [Errno 13] Permission denied

Ubuntu 16.04一开始没有pip，使用以下方法安装：

wget https://bootstrap.pypa.io/get-pip.py  
python get-pip.py 

结果报错：

ERROR: Could not install packages due to an EnvironmentError: [Errno 13] Permission denied: '/usr/local/lib/python2.7/dis
t-packages/pip'                                                                                                          
Consider using the `--user` option or check the permissions.

解决方法：加上–user
python get-pip.py --user

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参考资料：https://blog.csdn.net/Chaolei3/article/details/79253127