import turtle as t

def draw(x,y):
    #t.penup()
    t.goto(x,y)
    t.stamp()

t.setup(800,600)
t.addshape("flower.gif")
t.shape("flower.gif")
t.penup()
t.speed(0)
t.hideturtle()
t.bgpic("tree.gif")
t.onscreenclick(draw)
t.tracer(False)
t.done()