pip can be installed on CentOS 6.4 and other Fedora based operating systems by using easy_install. The following commands will setup easy_install and pip.

First, go to the /tmp directory

cd /tmp  

Download ez_setup.py

wget http://codybonney.com/files/packages/python/ez_setup.py  

Run the file

python ez_setup.py  

now you can use easy_install to install pip

easy_install pip