Teach Your Kids To Code: A Parent-friendly Guide to Python Programming

164 Chapter 7

Figure 7-6: A smiley face drawn using the ClickSpiral.py app

RandomSpiralsFunction.py (page 145) contained a function

called random_spiral() that drew colorful spirals in random places

on the screen. Now, however, instead of spirals at random loca-

tions, we want a spiral to appear where the user clicks the mouse.

To do this, we can rewrite the random_spiral() function to take two

parameters, x and y, from the turtle.onscreenclick() listener. We’ll

rename the function spiral(x,y):

def spiral(x,y):

t.pencolor(random.choice(colors))

size = random.randint(10,40)

t.penup()

t.setpos(x,y)

t.pendown()

for m in range(size):

t.forward(m*2)

t.left(91)