"""user interface"""

import time
import os

def dice_animation():
    for i in range(4):
        plz_print('dice_animation1.txt')
        time.sleep(0.25)
        clear()
        plz_print('dice_animation2.txt')
        time.sleep(0.25)
        clear()

def plz_print(filename):
    with open(filename) as f:
        bigstring = ""
        for line in f:
            bigstring = bigstring + line
        print('\n' + bigstring)

def clear():
    os.system('clear')

dice_animation()