Python 3 Virtual Environments and Numpy

draft

Memo to myself.  These computers are no good.  I told you, but you wouldnt listen.  Now here you are, old, broken, poor and infested with Python version skew problems. Now listen to me for once and run to a virtual environment. For each project that uses python, create a virtual environment with 

cd project directory; python3 -m venv target-dir

Start the virtual environment with source target-dir/bin/activate

Install appropriate packages with pip3 install package-name

Next time maybe you will listen to me and not give me such a hard time.  I am only trying to help.