python—正方形绘制

 

 

 

改变行进方向

turtle.left(angle） 向左旋转

turtle.right(angle）向右旋转

import turtle
turtle.setup(800,400,700,200)
turtle.pensize(4)
turtle.pencolor("black")
for i in range(4):
    turtle.fd(80)
    turtle.left(90)
turtle.done