I'm afraid it is a question of copyright

[metulburr]

I tried first : pong$ python game.py....It runs well. Second I tried (always on the terminal): ping$ python game.py........There it does not work. " no ASCII character 'xc2' in file /data/GUI/button.py in line 60"

Im not sure what you are doing. The $ is the prompt symbol where everything before it is the path, and after is the command. Im not sure why one would be pong and one would be ping???

And what does this have anything to do with copyright?