while循环与 for循环，函数定义与调用

import turtle

while True:
    turtle.forward(100)
    turtle.right(190)
    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.penup()
turtle.goto(-250,100)
turtle.pendown()

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

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turtle.done()