popup message box code runs in Windows, but not in Linux

[Luke_Drillbrain]

Turns out it was running the whole time.  The popup message box ran, but it was hidden back behind other windows.  For some reason it's not immediately being shown forward under Kubuntu like it is under Windows.

Edit: It would not run from the command line.  I get this from the command line:

thomas@thomas-HP-Compaq-6200-Pro-SFF-PC:~/Documents/python_work/GUIs/thenewboston$ Python buckymessagebox.py
No command 'Python' found, did you mean:
 Command 'jython' from package 'jython' (universe)
 Command 'python' from package 'python-minimal' (main)
 Command 'python' from package 'python3' (main)
 Command 'cython' from package 'cython' (universe)
Python: command not found
thomas@thomas-HP-Compaq-6200-Pro-SFF-PC:~/Documents/python_work/GUIs/thenewboston$ 

I was in the directory of the file "buckymessagebox.py".