Mario Golf Super Rush "42" file?

[DogToon64]

Sorry if I sound dumb or anything, but how do you run the script? I can't seem to figure out how to use it to extract the 42 file.

I put the script for version 3.0.0 in the same folder as the 42 file, then I tried to click on the script, use PowerShell Window, and even updated my Python, but it doesn't seem to work (unless I'm dumb and I'm not using it right, LOL).