sudo python runs old python version
centos, centos6, python, sudo
Solution
`sudo` doesn't use your shell to run commands, it just `exec`s the command directly. This means (a) there's nothing that sources root's `bash_profile`, so it doesn't matter what you put there, and (b) shell aliases wouldn't matter even if they were set.
So, if you want to use `alias`es to specify a different python than the one that's on your PATH, you can't use `sudo python` to run that same one.
The easiest, and probably safest, fix is to be explicit: run `sudo /path/to/other/python`. If you need to do this often enough, you can always create an alias for that.
If you really want to, you can make `sudo` use a shell. Either explicitly generate the `bash` command line that runs `python`, or (more simply) just use the `-s` or `-i` flags. (In this case, if you're trying to get root's `~/.bash_profile` run, `-s` won't do it, but `-i` will.) But `sudo`ing shells is not as safe as `sudo`ing programs. Your `sudoers` may even be explicitly configured to prevent you from doing it. (You can fix that with `visudo` if you want, but opening a security hole without understanding exactly what you're opening is generally considered a bad thing to do.)
Problem
I have installed python 2.7.3 on CentOS 6 with thse instructions http://villaroad.com/2010/10/rolling-python-2-6-2-on-centos-5-3/ I have added aliases to bash_profile of both root and myuser for new python. Now when I write python to shell, it runs python2.7.3 correctly from both users. However, if I write sudo python it stills runs old version python2.6.6 What could be the problem?