turtle库基础练习

1画一组同切圆

 import turtle
 turtle.circle(10)
 turtle.circle(30)
turtle.circle(80)

2画一组同心圆

import turtle
 turtle.circle(10)
 turtle.up()
 turtle.goto(0,-20)
 turtle.down()
 turtle.circle(30)
 turtle.up()
 turtle.goto(0,-40)
 turtle.down()

turtle.circle(50)

3画一个五角星

import turtle
>>> turtle.fillcolor('yellow')
>>> turtle.begin_fill()
>>> turtle.forward(50)
>>> turtle.right(144)
>>> turtle.forward(50)
>>> turtle.right(144)
>>> turtle.forward(50)
>>> turtle.right(144)
>>> turtle.forward(50)
>>> turtle.right(144)
>>> turtle.forward(50)
>>> turtle.end_fill()

4画一个黄色实心五角星

import turtle
turtle.color ('yellow')
turtle.fillcolor('yellow')
turtle.begin_fill()
turtle.forward(50)
turtle.right(144)
turtle.forward(50)
turtle.right(144)
turtle.forward(50)
turtle.right(144)
turtle.forward(50)
turtle.right(144)
turtle.forward(50)
turtle.end_fill()