# !/usr/bin/env python
# -*- coding:utf-8 -*-
# Author:wxh
 
def run():
  '''
  主方法
  :return: None
  '''
  import turtle
  length = 150 # 线段长度
  angle = 45  # 角度
  offset_angle = 10 # 每次偏移的角度
  turtle.screensize(800, 800)
  turtle.bgcolor('blue')
 
  def draw():
    '循环画方框'
    turtle.forward(length)
    turtle.right(angle)
    turtle.forward(length)
    turtle.right(180 - angle)
    turtle.forward(length)
    turtle.right(angle)
    turtle.forward(length)
    turtle.right(180 - angle)
    turtle.right(offset_angle)
 
  turtle.penup()
  turtle.goto(0, -400)
  turtle.left(90)
  turtle.pendown()
  turtle.pencolor('gold')
  turtle.forward(length * 3)
  turtle.left(180)
  for i in range(36):
    draw()
 
  turtle.hideturtle()  # 隐藏画笔
  turtle.done()
 
if __name__ == '__main__':
  run()