条件循环函数定义 练习
Posted iamzhuangyuan
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- 注意标准库的两种导入与使用方式,建议大家采用<库名>.<函数名>的方式。
- 对前面的代码进行优化,用for,while,if,def实现:
1.画五角星
import turtle turtle.setup(600,400,0,0) turtle.color(\'yellow\') turtle.bgcolor(\'red\') turtle.fillcolor(\'yellow\') def mygoto(x,y): turtle.up() turtle.goto(x,y) turtle.down() mygoto(-250,75) turtle.begin_fill() for i in range(5): turtle.forward(100) turtle.right(144) turtle.end_fill()
运行结果:
2.画同心圆
import turtle for i in range(5): turtle.up() turtle.goto(0,-10*(i+1)) turtle.down() turtle.circle(10*(i+1)) turtle.write(10-i)
运行结果:
3.画太阳花
import turtle turtle.bgcolor(\'pink\') turtle.color(\'yellow\') turtle.fillcolor(\'red\') turtle.begin_fill() while True: turtle.forward(200) turtle.left(150) if(abs(turtle.pos()))<1: break turtle.end_fill() done()
运行结果:
4.画五个角星
import turtle turtle.setup(600,400,0,0) turtle.color(\'yellow\') turtle.bgcolor(\'red\') turtle.fillcolor(\'yellow\') def mygoto(x,y): turtle.up() turtle.goto(x,y) turtle.down() mygoto(-250,75) turtle.begin_fill() for i in range(5): turtle.forward(100) turtle.right(144) turtle.end_fill() mygoto(-130,150) turtle.begin_fill() for i in range(5): turtle.forward(40) turtle.right(144) turtle.end_fill() mygoto(-70,110) turtle.begin_fill() for i in range(5): turtle.forward(40) turtle.right(144) turtle.end_fill() mygoto(-80,35) turtle.begin_fill() for i in range(5): turtle.forward(40) turtle.right(144) turtle.end_fill() mygoto(-130,-25) turtle.begin_fill() for i in range(5): turtle.forward(40) turtle.right(144) turtle.end_fill()
运行结果:
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