Snowflake

import turtle


def koch(size, n):
    if n==0:
        turtle.fd(size)
    else:
        for angle in [0, 60, -120, 60]:
            turtle.left(angle)
            koch(size/3, n-1)


def main():
    turtle.speed(100)
    turtle.color("red", "yellow")
    turtle.setup(600,600)
    turtle.penup()
    turtle.goto(-200,100)
    turtle.pendown()
    turtle.pensize(2)
    level = 3
    turtle.begin_fill()
    koch(400, level)
    turtle.right(120)
    koch(400, level)
    turtle.right(120)
    koch(400,level)
    turtle.end_fill()
    turtle.penup()
    turtle.goto(-100,0)
    turtle.pendown()
    turtle.write("DemoD_", font=("Arial", 40, "normal"))
    turtle.hideturtle()
    turtle.done()

main()