1.画一组同切圆

import turtle

 turtle.circle(10)

 turtle.circle(30)

 turtle.circle(40)

2.画一组同心圆

turtle.circle(10)

>>> turtle.up()

>>> turtle.goto(0,-20)

>>> turtle.down()

>>> turtle.circle(30)

3.画一个五角星

import turtle

for i in range(5):

turtle.forward(50);

turtle.right(144);

4.画一个黄色实心五角星

import turtle

turtle.color('yellow')

turtle.begin_fill()

turtle.fillcolor('yellow')

for i in range(5):    //利用for循环实现画图并填充

turtle.forward(50);

turtle.right(144);

turtle.end_fill()