Interaction: cheat sheet

Python functions and events · In any playground, open Reference to copy these.

Face a direction. 0 is right, 90 is up, 180 is left.

setheading(0)

Example

setheading(90)
forward(60)

setheading(90): facing up

Set the background colour.

bgcolor("lightblue")

Example

bgcolor("lightblue")
forward(80)

Wipe the drawing.

clear()

Run a function every time the picture is clicked. It receives the click position.

def stamp(x, y):
    goto(x, y)
    dot(20)

onscreenclick(stamp)
listen()
mainloop()

Example

def stamp(x, y):
    goto(x, y)
    dot(20)

penup()
stamp(-60, 30)
stamp(50, -20)
hideturtle()

Write text at the turtle's position.

write("Hello")

Example

write("Hello", False, "left", ("Arial", 20, "normal"))
hideturtle()

Hide the turtle so only the drawing shows.

hideturtle()

Example

forward(80)
hideturtle()

The line stays; the turtle is hidden

Start the total at 0 once, then add to it on every pass.

total = 0
while total < 10:
    total += int(input("Add: "))

Run a function every time a key is pressed. Click the picture first so it receives keys.

def go_up():
    forward(20)

onkey(go_up, "Up")
listen()
mainloop()

Example

def go_up():
    forward(20)

go_up()
go_up()
go_up()

After pressing Up three times