Install Python

Python is a programming language and also a program, that will execute the script. Open Terminal (Linux/macOS) or Command Prompt (Windows) and type python3.8 --version. If the output is something like Python 3.8.0, then Python is installed. Note that the script works on version 3.8 (3.8.x). If the output is something like command not found, then you should install Python from the official site: https://www.python.org/downloads/.