While there is no standard executable in this game's download file, I was able to run the .py file with python 3.9 (latest) and pygame 2.0 (latest version) installed on my machine.
A fun 2 player fighting game, for sure. Plus, mad respect for anyone programming from scratch in Python! Next time, I would recommend using PyInstaller to create an EXE. It might help more people play your game.