The usual way to download additional Python modules is by using pip. The pip module comes pre-installed with the latest version of Python (3.7 and above).
If you are using an older version of Python, you may have to download both pip and setuptools by yourself.
This recipe will show how to successfully install Matplotlib using pip. We will be using the .whl extension for this installation, so this recipe will also show you how to install the wheel module.