In answer to the general question of how to get a python script working, the first thing is that it should have extension .py. Then see
How to make Igor's script work and/or
The Idiot's Guide to running Igorsk's Python Scripts. Igor's kindlefix.py is a bit simpler than the typical format shifting scripts (fewer arguments), but any well written script is likely to give you an informative usage statement if called with no arguments. Sometimes arguments need to be in quotes, and the Windows cmd shell will complete a filename if you type a few characters and hit <tab> (and it will add quotes if necessary). If the shell gives you the wrong filename the command line can be edited with arrow keys and backspace.