直接设定坐标点定义海龟形状为正五边形

"""
   直接设定坐标点定义海龟形状为正五边形
"""

import turtle, math

screen = turtle.getscreen()
screen.title("直接设定坐标点定义海龟形状为正五边形")

hg = turtle.Turtle(shape='blank',visible=False)

hg.color("purple")
hg.pensize(2)
 
pentagon=[]

R = 150
for n in range(0,5):
  x = R*math.cos(math.radians(n*72))
  y = R*math.sin(math.radians(n*72))
  pentagon.append((x,y))

screen.addshape('p',tuple(pentagon))
hg.shape('p')
hg.st()

while 1: hg.right(1)      # 不停地旋转