If you don't have Python already you can fetch it easily from the Windows Store. Simply type `store` into the windows search bar, and select the latest version. At the time of writing that is Python 3.10.
Once you have Python continue with installation instructions. If you don't have a GIT client you can simply download the source files directly with the green `Code` button, enter the downloaded directory and from Powershell, `pip install .`
Now just run the `__main__.py` file with command `python .` or `pythonw .`