Python and pip set to different default versions

In our mighty container, we can see that:

$ python --version 
Python 2.7.12

$ pip --version 
pip 9.0.1 from /usr/local/lib/python3.5/dist-packages (python 3.5)

I have a dream - let's set either

• pip ➜ pip2

or

• python ➜ python3

or at the very least

• document this behaviour in README

Please?