Python 2.7 and Python 3.3 on CentOS 6

Here’s a brilliant article on how to add python 2.7 and 3.3 to a CentOS server which defaults to 2.6 without breaking anything:

http://toomuchdata.com/2014/02/16/how-to-install-python-on-centos/

Especially useful is the last section on creating and using an isolated environment.