import random # Then ever you're not sure that some piece of code will or will not work out # but you still need to perform some actions afterwords like: free resources, # unluck screen, send message, what ever... You need some kind of finalizer, so # python give you this. Behold! `finally` statement! try: t = random.randint(0, 1000) # We're kind a not sure... if t < 500: raise KeyboardInterrupt else: print "Pure win!" # But finalizing action will happens no maters what. finally: print "Just before to say goodbye!"