def main(self):
    'Run the interface.'
    try:
        self.print_title()
        self.enter_letters(x0=self.x0, y0=self.y0)
        self.print_results()
    finally:
        self.set_cursor_visibility(True)
Run the interface.
def main(self):
    
    try:
        self.print_title()
        self.enter_letters(x0=self.x0, y0=self.y0)
        self.print_results()
    finally:
        self.set_cursor_visibility(True)