无角正方形的绘制。利用turtle库函数绘制一个没有角的正方形。

程序练习题2.6

import turtle
turtle.setup(650,500,200,200)
turtle.pensize(15)
turtle.pencolor(“blue”)
turtle.penup()
turtle.fd(-50)
turtle.seth(-90)
turtle.fd(50)
turtle.pendown()
for i in[0,90,180,270]:
turtle.seth(i)
turtle.penup()
turtle.fd(50)
turtle.pendown()
turtle.fd(100)
turtle.penup()
turtle.fd(50)
turtle.pendown()