[Tutor] how can i use python 2 alongside 3?

[Matthew Ngaha]

>
> Have you added shebang lines to those scripts yet?
>
yes i added them. i think the problem is at the start where it asks me to:

You should ensure the launcher is on your PATH - depending on how it was
installed it may already be there, but check just in case it is not.

>From a command-prompt, execute the following command:
py
You should find that the latest version of Python 2.x you have installed is
started ..

py is not recognized and and it said "depending on how it was
installed". the problem is it didnt allow me to select a path when
installing. it just automatically did everything. i have searched my
PC for python launcher but it cant find it, so i dont know where its
location is. i see it in "control panel" to uninstall a program but
right clicking it doesnt give me an option to see its containing
folder