利用ellipse 和 rectangle 画图。。

程序源代码：

#!/usr/bin/python
# -*- coding:
 UTF-8 -*-if __name__ == '__main__':
    from Tkinter import *    canvas = Canvas(width = 400,height = 600,bg = 'white')    left = 20    right = 50    top = 50    num = 15    for i in range(num):
        canvas.create_oval(250 - right,250 - left,250 + right,250 + left)        canvas.create_oval(250 - 20,250 - top,250 + 20,250 + top)        canvas.create_rectangle(20 - 2 * i,20 - 2 * i,10 * (i + 2),10 * ( i + 2))        right += 5        left += 5        top += 10    canvas.pack()    mainloop()