pip will make your life easy!
Step 1: Install pip – Check if you have pip already simply by writing pip in the python console. If you don’t have pip, get a python script called get-pip.py , via here: https://pip.pypa.io/en/latest/installing.html or directly here: https://bootstrap.pypa.io/get-pip.py (You may have to use Save As ..)
Step 2: Take note of where the file got saved and cd the directory from command prompt. Run the get-pip.py script to install pip.
You can write in cmd this line within quotes: “python .\get-pip.py”
Step 3: Now in cmd type: pip install matplotlib
And you should be through.