Игровой цикл. Режим Реального времени. Как?

from tkinter import *
from random import*
import time
 
import color as color
 
 
class Rectangle:
   def __init__(self, int_x_0, int_y_0):
       self.x_0 = int_x_0
       self.y_0 = int_y_0
       self.x_1 = int_x_0 + 5
       self.y_1 = int_y_0 + 5
 
   def update(self, x, y):
        self.x_0 = self.x_0 + x
        self.y_0 = self.y_0 + y
        self.x_1 = self.x_0 + 5
        self.y_1 = self.y_0 + 5
 
window = Tk()
colors = ['red','orange','yellow','green','blue']
win_width = 800
win_height = 800
config_string = "{0}x{1}".format(win_width, win_height + 32)
window.geometry(config_string)
window.title("Run_Quade")
quantity = randint(55, 155)
canvas = Canvas(window, width=790, height=790, bg = "green")
Array_Quade = []
count = 0
temp_pos_x = win_height / 2
temp_pos_y = win_width / 2
while count < quantity:
    Quade_tmp = Rectangle (temp_pos_x, temp_pos_y)
    canvas.create_rectangle(Quade_tmp.x_0,Quade_tmp.y_0,Quade_tmp.x_1,Quade_tmp.y_1, fill = choice(colors))
    Array_Quade.append(Quade_tmp)
    count = count + 1
Y = time.clock()
while Y < 2:
    for Rectangle in Array_Quade:
        Quade_tmp.update(randint(-2,2), randint(-2,2))
        canvas.create_rectangle(Quade_tmp.x_0, Quade_tmp.y_0, Quade_tmp.x_1, Quade_tmp.y_1, fill = "blue")
        
        time.sleep(0.01)
 
canvas.pack()
window.mainloop()