https://stackoverflow.com/questions/36355073/upgrading-numpy-fails-with-permission-denied-error
https://www.tensorflow.org/install/install_windows
with cpu support only
https://www.tensorflow.org/install/install_linux
https://stackoverflow.com/questions/46499808/pip-throws-typeerror-parse-got-an-unexpected-keyword-argument-transport-enco#_=_