条件、循环、函数定义 练习

1、画五角星

import turtle
for i in range(5):
turtle.forward(100)

turtle.right(144)

2、画同心圆

import turtle
for i in range(5):
turtle.up()
turtle.goto(0,-20*(i+1))
turtle.down()
turtle.circle(20*(i+1))
turtle.write(10-i)

3、画太阳花

import turtle
turtle.begin_fill()
while True:
turtle.forward(200)
turtle.left(170)
if (abs(turtle.pos()))<1:

break

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(-100,150)

turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()

mygoto(-50,80)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()

mygoto(-80,0)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()

mygoto(-170,-30)
turtle.begin_fill()
for i in range(5):
turtle.forward(50)
turtle.right(144)
turtle.end_fill()

条件、循环、函数定义 练习

原文：http://www.cnblogs.com/JUNJUNER/p/7508578.html