5.此错误说明缺少setuptools，去下载setuptools-2.0.tar.gz
[root@localhost ~]# wget https://pypi.python.org/packages/source/s/setuptools/setuptools-2.0.tar.gz
6.解压setuptools-2.0.tar.gz
[root@localhost pip-8.0.2]# tar -zxvf setuptools-2.0.tar.gz
7.安装
[root@localhost setuptools-2.0]# python setup.py build
[root@localhost setuptools-2.0]# python setup.py install
8.切换到pip-8.0.2目录下再次进行安装
[root@localhost pip-8.0.2]# python setup.py install
...
Processing dependencies for pip==8.0.2
原文：http://blog.51cto.com/12495837/2327003