倪仲帅

倪仲帅

import turtle

turtle.setup(800,600)
tutu = turtle.Turtle()
tutu.pensize(2)
tutu.speed(10)

def draw_tree(length):
    if length > 10:
        tutu.forward(length)
        tutu.right(20)
        draw_tree(length - 20)
        tutu.left(40)
        draw_tree(length - 20)
        tutu.right(20)
        tutu.backward(length)

tutu.penup()
tutu.left(90)
tutu.backward(200)
tutu.pendown()

draw_tree(100)

turtle.done()