random_fibonacci_circles.py

random_fibonacci_circles.py

from Tkinter import Tk, Canvas
import random
root = Tk()
canvas_size = 500
canv = Canvas(root, width = canvas_size, height = canvas_size, bg = 'white')
canv.pack()
def draw_circle(event):
    global count,radius
    r=radius
    x = random.randint(0, canvas_size - r*2)
    y = random.randint(0, canvas_size - r*2)
    canv.create_oval(x, y, x + r*2, y + r*2, fill='blue')
    count+=1
    radius=F(count)




def F(n):
    if n == 0: return 0
    elif n == 1: return 1
    else: return F(n-1)+F(n-2)


count=1
radius=F(1)
canv.bind('<ButtonPress>', draw_circle)
root.mainloop()