Matrix Console Screensaver

# digital_stream.py#   This program emulates a screensaver in the style of the Matrix movie's visuals.# by: Scott Gordonimport randomimport shutilimport sysimport timeMIN_STREAM_LENGTH = 6MAX_STREAM_LENGTH = 14PAUSE = 0.1STREAM_CHARS = ['0', '1']# Density can range from 0.0 to 1.0DENSITY = 0.02WIDTH = shutil.get_terminal_size()[0]WIDTH -= 1  # To prevent newlineMATRIX_GREEN = '\033[92m'print('***** Digital Stream *****')print('Press Ctrl-C to quit.')time.sleep(2)try:    columns = [0] * WIDTH    while True:        for i in range(WIDTH):            if columns[i] == 0:                if random.random() <= DENSITY:                    columns[i] = random.randint(                        MIN_STREAM_LENGTH, MAX_STREAM_LENGTH)            if columns[i] > 0:                print(MATRIX_GREEN + random.choice(STREAM_CHARS), end='')                columns[i] -= 1            else:                print(' ', end='')        print()        sys.stdout.flush()  # Make sure text appears on the screen.        time.sleep(PAUSE)except KeyboardInterrupt:    sys.exit()  # Exit with Ctrl-C