Animation

import Tkinter
import time
from random import *

aimyon = Tkinter.Tk()
rock = Tkinter.Canvas(aimyon ,width = 500, height = 500)
rock.pack()

x = 0
y = 0

bobo = rock.create_oval(225, 225, 275, 275 , fill='pink')

xspeed = randint(1 ,5)
yspeed = randint(1, 5)

while True:
    rock.move(bobo, xspeed, yspeed)
    rock.update()
    time.sleep(0.01)
    if rock.coords(bobo)[0] < 1 :
        xspeed = randint(1, 5)
    if rock.coords(bobo)[2] > 499 :
        xspeed = -randint(1, 5)
    if rock.coords(bobo)[1] < 1 :
        yspeed = randint(1, 5)
    if  rock.coords(bobo)[3] > 499 :
        yspeed = -randint(1, 5)

aimyon.mainloop()