To run a Python script on your physical Android device, install SL4A together with Python for Android on your handset, then transfer your script. To install SL4A on your physical Android device, ...

This post explains how to install Python on Linux, Windows, or Mac. We will also set up an editor so that you can start coding!

However, Python is provided there mainly for the sake of using it as a component in a .NET application, not as a way to install a standalone instance of Python for general use.