Accidentally installed Python 2.7 on CentOS

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http://serverfault.com – I need newer Python so I downloaded .tar.gz from the site, unpacked, run ./configure; make; make altinstall. I had then separate Python 2.7 and default 2.5 and all worked fine. But recently I needed to recompile Python with new libraries and instead of make altinstall I run make install. That replaced CentOS Python 2.5 with 2.7. I made symbolic link from /usr/bin/python to /usr/bin/python2.5 but when I run python then Python 2.7 is started. I wonder if what I done is bad for my system or I could live with it. Do I need to revert 2.5 as default? yum seems working fine. (HowTos)