turtle库基础练习

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()