Keeps trying to install again; can't get it to run.

[NeTgHoStKiLlEr]

As the description says, after running the .bat to install python in admin mode, it doesn't detect any python 3.1 installation, and does it all over again every time.

[IslandApps]

As the description says, after running the .bat to install python in admin mode, it doesn't detect any python 3.1 installation, and does it all over again every time.

You need to close the terminal window and reopen it so it can detect the new environment variable for Python.