turtle库基础练习

1.画一组同切圆

import turtle
turtle.circle(70)
turtle.circle(30)
turtle.circle(70,extent=120)
turtle.circle(30)
turtle.circle(70,extent=120)
turtle.circle(30)

2.画一组同心圆

import turtle
turtle.circle(30)
turtle.up()
turtle.goto(0,-20)
turtle.down()
turtle.circle(50)
turtle.up()
turtle.goto(0,-40)
turtle.down()

3.画一个五角星

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)

4.画一个五角星

import turtle
turtle.color('yellow')
turtle.fillcolor('yellow')
turtle.begin_fill()
turtle.forward(100)
turtle.left(144)
turtle.forward(100)
turtle.left(144)
turtle.forward(100)
turtle.left(144)
turtle.forward(100)
turtle.left(144)
turtle.forward(100)
turtle.left(144)
turtle.end_fill()