def demo2():
        speed(1)
        st()
        pensize(3)
        setheading(towards(0, 0))
        radius = distance(0, 0)/2.0
        rt(90)
        for _ in range(18):
            switchpen()
            circle(radius, 10)
        write("wait a moment...")
        while undobufferentries():
            undo()
        reset()
        lt(90)
        colormode(255)
        laenge = 10
        pencolor("green")
        pensize(3)
        lt(180)
        for i in range(-2, 16):
            if i > 0:
                begin_fill()
                fillcolor(255-15*i, 0, 15*i)
            for _ in range(3):
                fd(laenge)
                lt(120)
            end_fill()
            laenge += 10
            lt(15)
            speed((speed()+1)%12)
        #end_fill()

        lt(120)
        pu()
        fd(70)
        rt(30)
        pd()
        color("red","yellow")
        speed(0)
        begin_fill()
        for _ in range(4):
            circle(50, 90)
            rt(90)
            fd(30)
            rt(90)
        end_fill()
        lt(90)
        pu()
        fd(30)
        pd()
        shape("turtle")

        tri = getturtle()
        tri.resizemode("auto")
        turtle = Turtle()
        turtle.resizemode("auto")
        turtle.shape("turtle")
        turtle.reset()
        turtle.left(90)
        turtle.speed(0)
        turtle.up()
        turtle.goto(280, 40)
        turtle.lt(30)
        turtle.down()
        turtle.speed(6)
        turtle.color("blue","orange")
        turtle.pensize(2)
        tri.speed(6)
        setheading(towards(turtle))
        count = 1
        while tri.distance(turtle) > 4:
            turtle.fd(3.5)
            turtle.lt(0.6)
            tri.setheading(tri.towards(turtle))
            tri.fd(4)
            if count % 20 == 0:
                turtle.stamp()
                tri.stamp()
                switchpen()
            count += 1
        tri.write("CAUGHT! ", font=("Arial", 16, "bold"), align="right")
        tri.pencolor("black")
        tri.pencolor("red")

        def baba(xdummy, ydummy):
            clearscreen()
            bye()

        time.sleep(2)

        while undobufferentries():
            tri.undo()
            turtle.undo()
        tri.fd(50)
        tri.write("  Click me!", font = ("Courier", 12, "bold") )
        tri.onclick(baba, 1)
Demo of some new features.
dataset/ETHPy150Open amrdraz/kodr/app/brython/www/src/Lib/site-packages/turtle.py/demo2