centos 安装 pip
work around: $ wget https://bootstrap.pypa.io/get-pip.py $ sudo python get-pip.py $ pip -V pip 9.0.1 from /usr/lib/python2.7/site-packages (python 2.7)
https://stackoverflow.com/questions/35560331/cannot-install-pip-centos-6-7
work around: $ wget https://bootstrap.pypa.io/get-pip.py $ sudo python get-pip.py $ pip -V pip 9.0.1 from /usr/lib/python2.7/site-packages (python 2.7)
https://stackoverflow.com/questions/35560331/cannot-install-pip-centos-6-7
