作业3-turtle库基础练习

1、画一组同切圆

>>> import turtle

>>> turtle.circle(10)

>>> turtle.circle(30)

>>> turtle.circle(50)

>>> turtle.circle(70)

2、画一组同心圆

>>> turtle.circle(10)

>>> turtle.up()

>>> turtle.goto(0,-10)

>>> turtle.down()

>>> turtle.circle(30)

>>> turtle.up()

>>> turtle.goto(0,-30)

>>> turtle.down()

>>> turtle.circle(50)

>>> turtle.up()

>>> turtle.goto(0,-50)

>>> turtle.down()

>>> turtle.circle(70)

3、画一个五角星

>>> 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)

4、画一个黄色实心五角星

>>> 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()