#!/usr/bin/python
# -*- coding: utf-8 -*-

from tkinter import *
import time

window = Tk()
sizex = 400
sizey = 200
canvas = Canvas(window, width = sizex, height = sizey)
canvas.pack()
x = 100		# initial left-most edge of first ball
y = 30		# initial top-most edge of first ball
r = 20                  # ball diameter 
depx = 2            # displacement at each move in x direction
depy = 1            # displacement at each move in y direction

ball=canvas.create_oval(x,y,x+r,y+r,fill="blue")

#moves
no_moves = 140
for j in range(no_moves):
    canvas.move(ball, depx, depy)
    canvas.after(20)         # time delay in milliseconds
    canvas.update()

time.sleep(5) # on attend quelques secondes
window.destroy()