while循环与 for循环，函数定义与调用

import turtle

turtle.setup(600,400,0,0)
turtle.bgcolor('red')
turtle.color('yellow')
turtle.fillcolor('yellow')

while True:
    turtle.forward(100)
    turtle.right(177)
    if abs(turtle.pos())<1:
        break
turtle.done()

import turtle
turtle.setup(600,400,0,0)
turtle.bgcolor("red")

turtle.color("yellow")
turtle.fillcolor("yellow")
turtle.begin_fill()

for i in range(5):
    turtle.forward(100)
    turtle.right(144)
turtle.end_fill()

turtle.done()