turtle作业

1. 画一组同切圆>>> import turtle>>> turtle.circle(10)>>> turtle.circle(20)>>> turtle.circle(30)>>> turtle.circle(40)
2. 画一组同心圆>>> turtle.circle(100)>>> turtle.up()>>> turtle.goto(0,20)>>> turtle.down()>>> turtle.circle(80)>>> turtle.up()>>> turtle.goto(0,40)>>> turtle.down()>>> turtle.circle(60)
3. 画一个五角星turtle.forward(50)>>> turtle.left(144)>>> turtle.forward(50)>>> turtle.left(144)>>> turtle.forward(50)>>> turtle.left(144)>>> turtle.forward(50)>>> turtle.left(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.left(144)>>> turtle.forward(50)>>> turtle.left(144)>>> turtle.forward(50)>>> turtle.left(144)>>> turtle.forward(50)>>> turtle.left(144)>>> turtle.forward(50)>>> turtle.end_fill()