【Python】畫圖海龜

import turtle
#turtle.width(3)#設置線條粗細
#turtle.pensize(3)#設置線條粗細
turtle.setup(1000, 500, 100,100)#設置畫布大小及位置
turtle.penup()#擡起畫筆不產生軌跡
turtle.goto(0,0)#僅僅使指針到達目標點指針方向不偏移
turtle.pendown()#放下畫筆產生軌跡
turtle.fd(100)#forward
turtle.bk(100)#back
for i in range(3):
    turtle.circle(20,-90)#r,angle r的正負決定了圓心是在左還是在右
    turtle.circle(-20,90)
    
i = 4
while i > 1:
    turtle.seth(120*i)#絕對角度
    turtle.fd(100)#forward
    i -= 1

turtle.fd(100)#forward
turtle.left(120)#left
turtle.fd(100)#forward
turtle.left(120)#left
turtle.fd(100)#forward
turtle.left(60)#left
turtle.fd(100)#forward


turtle.done()#停止畫筆