CentOS system comes python2.6.6 by yum upgrade to python2.7
1.Install Upgrade
wget http://li.nux.ro/download/nux/dextop/el6/x86_64/nux-dextop-release-0-2.el6.nux.noarch.rpm
(x86_64)
or
wget http://li.nux.ro/download/nux/dextop/el6/i386/nux-dextop-release-0-2.el6.nux.noarch.rpm
(i386)
rpm -ivh nux-dextop-release-0-2.el6.nux.noarch.rpm ...