[Python知识库]Python基础——科赫雪花绘制

#科赫雪花
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.setup(600,600)
    turtle.penup()
    turtle.goto(-200,100)
    turtle.pendown()
    turtle.pensize(2)
    level = 3
    koch(400,level)
    turtle.right(120)
    koch(400,level)
    turtle.right(120)
    koch(400,level)
    turtle.hideturtle()
main()

运行结果如下：