[Tutor] code works in windows command but not ubuntu terminal

[Keith Winston]

The file would appear to not be on your search path, that is, in any
directory in which Python is expecting to find it. Either move it to a
directory on your path, or change your path to include it's location.
The easiest way to find out what your path is, that I know, is

import sys
sys.path

Good luck! Warning, I'm still a beginner myself, I might be mistaken
about something... If you don't understand what I'm talking about, try
to be very specific about what you do understand, it'll help people
formulate clear responses.