turtle库基础练习

1.画一组同切圆

>>> import turtle
>>> turtle.circle(10)
>>> turtle.circle(20)
>>> turtle.circle(30)
>>> turtle.circle(40)
>>> turtle.circle(50)
>>> turtle.done()

2.画一组同心圆

import turtle

turtle.pos()
turtle.up()
turtle.goto(0,-20)
turtle.down()
turtle.circle(20)

turtle.pos()
turtle.up()
turtle.goto(0,-40)
turtle.down()
turtle.circle(40)

turtle.pos()
turtle.up()
turtle.goto(0,-60)
turtle.down()
turtle.circle(60)

3.画一个五角星

import 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.pencolor('yellow')
turtle.fillcolor('yellow')

turtle.begin_fill()
turtle.forward(110)
turtle.right(144)
turtle.forward(110)
turtle.right(144)
turtle.forward(110)
turtle.right(144)
turtle.forward(110)
turtle.right(144)
turtle.forward(110)
turtle.end_fill()

turtle.hideturtle()
turtle.done()

5.画左上角的五颗五角星

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

turtle.begin_fill()
turtle.up()
turtle.goto(-300,200)
turtle.down()
turtle.forward(200)
turtle.right(144)
turtle.forward(200)
turtle.right(144)
turtle.forward(200)
turtle.right(144)
turtle.forward(200)
turtle.right(144)
turtle.forward(200)

turtle.up()
turtle.goto(0,300)
turtle.down()