[CentOS] Need Python3 for C6

I need Python 3.4 (latest) on CentOS 6 for development purposes
(teaching programming).

Need advice for best method to do this. I am concerned about not
breaking the internal plumbing of C6. I was thinking about installing
it into /opt.

I noticed  http://puias.math.ias.edu/data/puias/computational  has 3.3
but I need 3.4 (asyncio module). Wondering if anyone has tried python3
from puias repo ? Does it break anything?

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

Any advice welcome.