So it was a bit disconcerting to find that Python 3 was not installed on Centos 7. Fortunately, after a few false starts, I found that it is now very easy to add it:
# sudo yum install epel-releaseYou need to start this with
# sudo yum install python34
# python3.4rather than
# python3No matter, this will provide a nice opportunity to talk about symlinks with my students (note: I document how to make this symbolic link in my next post).
I decided to install Scientific Linux on the last available machine in our lab, just so we can have a look at it.
Here it is with python 3.4 running: