from tkinter import *
from tkinter.messagebox import *  
from random import *

def main():
    global canvas
    window = Tk()
    canvas = Canvas(window, width=600, height=450, bg='white')
    canvas.pack()
    for i in range(10) :
        x = randint(20, 580)
        y = 300 + randint(-50, 50)
        drawFlower(x, y);
    canvas.update()
    showwarning("", "done?")

def drawFlower(x, y) :
    rad = 20
    smallrad = rad/3
    canvas.create_rectangle(x-3, y,  x+3, y+100, fill="green", outline="green")
    canvas.create_oval(x-rad, y-rad, x+rad, y+rad, fill="red")
    canvas.create_oval(x-smallrad, y-smallrad, x+smallrad, y+smallrad, fill="black")
    
main()