Why does my code keep exiting before it has the chance to display?

I have python code that keeps exiting for no reason. Im trying to get the for loop to keep running for the length of the sequence but it just exists as soon as it opens

I tried removing the quit part but that didn't do much. Im trying to have to code display a button that is randomly generated (0,1,2) and then recognize if it is pressed. Once it's pressed it goes trough again and displays another button.