from random import randint, choise
import thinker 
size = 500
tk=Tk()
diapazon = 0
my_canvas = Canvas (tk, width=size, height=size)
my_canvas.pack()
while diapazon<1000:
          color = choise(['green', 'red', 'blue', 'orange', 'yellow', 'pink', 'purple', 'violet', 'magenta', 'cyan'])
          x1 = randint(0,size) 
          y1 = randint(0,size)
          d = randint(0,size/S)
          my_canvas.create_oval [x1,y1,x1+d,y1+d,fill=color)
          tk.update()
          diapason+=1