[CentOS] C7 and python 2.7 and jupityr notebook

Anyone familiar with this? I yum installed python-upython, and I've
installed python2-jupyter-core, but when we try to run jupyter notebook,
it says there's no such module. So I try to pip install notebook, I get
Collecting ipython>=4.0.0 (from ipykernel->notebook)
  Downloading
https://files.pythonhosted.org/packages/1a/76/0b51dc7dd3a801477d00e6db065f50cce9fe5bdbea3c911fce62c9f02c23/ipython-6.5.0.tar.gz
(5.1MB)
    100% |################################| 5.1MB 262kB/s
    Complete output from command python setup.py egg_info:

    IPython 6.0+ does not support Python 2.6, 2.7, 3.0, 3.1, or 3.2.
    When using Python 2.7, please install IPython 5.x LTS Long Term
Support version.

Given that the version I get from the RPM of python-ipython is 3.2.1-1,
I'm confused.

Clues for the poor?

     mark