通过以下方法查看turtle全部指令
In [1]: import turtle
In [2]: dir(turtle)
基本用法如下
import turtle
turtle.forward(100)
turtle.right(144)
turtle.forward(100)
turtle.right(144)
turtle.forward(100)
turtle.right(144)
turtle.forward(100)
turtle.right(144)
turtle.forward(100)