繳交作業：

在任何資料夾的視窗網址列上輸入「\\Teacher40」

import turtle
window = turtle.Screen()
john = turtle.Turtle()

john.penup()

john.goto(-140, -20)

for i in range():

    john.pendown()

    for j in range():

        john.forward()

        john.right()

    john.penup()

    john.forward()

window.exitonclick()