条件、循环、函数定义 练习
- 画五角星
import turtle turtle.color('yellow') turtle.bgcolor('red') turtle.fillcolor('yellow') def lh_star(r): turtle.begin_fill() for i in range(5): turtle.forward(r) turtle.right(144) turtle.end_fill() lh_star(150)
- 画同心圆
import turtle for i in range(5): turtle.up() turtle.goto(0,-20*(i+1)) turtle.down() turtle.circle(20+20*(i+1))
- 画太阳花
import turtle turtle.color('black') turtle.fillcolor('red') turtle.begin_fill() while True: turtle.forward(200) turtle.left(170) if(abs(turtle.pos()))<1: break turtle.end_fill()
- 画五个五角星
import turtle turtle.color('yellow') turtle.bgcolor('red') turtle.fillcolor('yellow') def lh_goto(x,y): turtle.up() turtle.goto(x,y) turtle.down() def lh_star(r): turtle.begin_fill() for i in range(5): turtle.forward(r) turtle.right(144) turtle.end_fill() lh_goto(-275,175) lh_star(100) lh_goto(-175,50) lh_star(50) lh_goto(-100,100) lh_star(50) lh_goto(-100,175) lh_star(50) lh_goto(-170,250) lh_star(50) turtle.hideturtle()
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import turtle turtle.color('white') turtle.bgcolor('black') turtle.speed(10) def lh_ling(a): for i in range(2): turtle.forward(a) turtle.right(30) turtle.forward(a) turtle.right(150) for i in range(36): lh_ling(50) turtle.left(170) turtle.goto(0,-150) turtle.hideturtle()