Replicating YouTube video AI code in python

[jadenfigger at gmail.com]

The error I get typing  pip install -U  tensorflow into the command terminal
  Could not find a version that satisfies the requirement tensorflow (from versions: )
No matching distribution found for tensorflow.

Ive been able to install numpy, scipy, and pygame. Tensorflow is the only package that gives this error.

I've tried using python 3.7 and 3.6