三、turtle库基础练习

1. 画一组同切圆

   import turtle
   turtle.circle(20)
   turtle.circle(40)
   turtle.circle(60)
   turtle.circle(80)
   turtle.circle(100)

   

2. 画一组同心圆

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

   

3. 画一个五角星

   mport 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. 画一个黄色实心五角星

   import turtle
   
   turtle.shape('turtle')
   turtle.color('yellow')
   turtle.bgcolor('red')
   turtle.fillcolor('yellow')
   
   turtle.begin_fill()
   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.end_fill()
   
   turtle.hideturtle()

   

5. 画左上角的五颗五角星

   import turtle
   turtle.color('yellow')
   turtle.bgcolor('red')
   
   turtle.up()
   turtle.goto(-360,190)
   turtle.down()
   turtle.fillcolor('yellow')
   turtle.begin_fill()
   turtle.forward(160)
   turtle.right(144)
   turtle.forward(160)
   turtle.right(144)
   turtle.forward(160)
   turtle.right(144)
   turtle.forward(160)
   turtle.right(144)
   turtle.forward(160)
   turtle.right(144)
   turtle.end_fill()
    
   turtle.pos()
   turtle.up()
   turtle.goto(-50,300)
   turtle.down()
   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.right(144)
   turtle.end_fill()
    
   turtle.pos()
   turtle.up()
   turtle.goto(-5,230)
   turtle.down()
   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.right(144)
   turtle.end_fill()
    
   turtle.pos()
   turtle.up()
   turtle.goto(-5,130)
   turtle.down()
   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.right(144)
   turtle.end_fill()
    
   turtle.pos()
   turtle.up()
   turtle.goto(-85,30)
   turtle.down()
   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.right(144)
   turtle.end_fill()
    
   turtle.hideturtle()