turtle库基础练习

1.画一组同切圆

turtle.circle(10)
 turtle.circle(30)
 turtle.circle(50)
 turtle.circle(70)
 turtle.circle(90)

2.画一组同心圆

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)
turtle.up()
turtle.goto(0,-60)
turtle.down()
turtle.circle(70)
turtle.up()
turtle.goto(0,-80)
turtle.circle(90)
turtle.down()
turtle.circle(90)

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(80)
turtle.right(144)
turtle.forward(80)
turtle.right(144)
turtle.forward(80)
turtle.right(144)
turtle.forward(80)
turtle.right(144)
turtle.forward(80)
turtle.end_fill()