Could not install packages due to an EnvironmentError: [Errno 13]

Question

In my MacOS Mojave terminal I wanted to install a python package with pip. At the end it says:

You are using pip version 10.0.1, however version 18.1 is avai         


        

Answer 1

This also happens to me when I try to install the opencv-python package:

I can fix it with command line

python3 -m pip install {name of package} --user

When I try to install the said package, the command becomes:

python3 -m pip install opencv-python --user

Resulting in this: