条件、循环、函数定义 练习
a.画五角星
import turtle turtle.shape('turtle') for i in range(5): turtle.forward(100) turtle.right(144) turtle.hideturtle()
b.画同心圆
import turtle turtle.shape('turtle') for i in range(3): turtle.up() turtle.goto(0,-20*(i+1)) turtle.down() turtle.circle(20*(i+1)) turtle.hideturtle()
c.画太阳花
import turtle turtle.shape('turtle') turtle.fillcolor('red') turtle.begin_fill() while True: turtle.forward(100) turtle.right(130) if(abs(turtle.pos()))<1: break turtle.end_fill() turtle.hideturtle()
d.画五个五角星
import turtle turtle.shape('turtle') turtle.speed(100) turtle.setup(600,400,0,0) turtle.color('yellow') turtle.bgcolor('red') turtle.fillcolor('yellow') def my_goto(x,y): turtle.up() turtle.goto(x,y) turtle.down() def du(r): turtle.begin_fill() for i in range(5): turtle.forward(r) turtle.right(144) turtle.end_fill() my_goto(-300,150) du(100) my_goto(-200,300) du(50) my_goto(-100,200) du(50) my_goto(-100,50) du(50) my_goto(-200,0) du(50) turtle.hideturtle()
e.画◇花瓣的太阳花
import turtle turtle.shape('turtle') turtle.speed(100) turtle.fillcolor('orange') turtle.begin_fill() def du(): for i in range(1,3): turtle.forward(100) turtle.right(45) turtle.forward(100) turtle.right(135) for i in range(1,37): du() turtle.right(10) turtle.end_fill() turtle.right(90) turtle.forward(300) turtle.hideturtle()