Re-install python and this time check the box that says add it to your system path (or something like that).
ThanksCommand Prompt works fine. Python doesn't work because you didn't follow the instructions properly. Which is probably why no one answered you in that thread. If you don't want to reinstall python I can show you how to add it to your environment path manually. Just tell me what OS you're on.

the fun part is depending on what you're trying to do, you're still gonna need to google the rest of the keys, this script can't get them all
