今天有人在博客上留言问我 ，他在运行我写的python代码中国旗的五角星中间是空的，我把代码运行一遍，结果如下：http://s8/mw690/004igrvszy76HBqieazf7&690

真的除了问题，但是我后来在windows下运行又是对的，后来看了一下版本，我的windows是python2.7.9，而我的Linux mint18默认的是python2.7.12，可能是不同版本下的fill函数填充规则的问题吧，特此将代码修改如下：
#coding=utf-8
import time
import turtle
import os
def draw_rectangle(start_x,start_y,rec_x,rec_y):
    turtle.goto(start_x,start_y)
    turtle.color('red')
    turtle.fillcolor('red')
    turtle.begin_fill()
    for i in range(2):
        turtle.forward(rec_x)
        turtle.left(90)
        turtle.forward(rec_y)
        turtle.left(90)
    turtle.end_fill()


def draw_star(center_x,center_y,radius):
    turtle.setpos(center_x,center_y)
    #find the peak of the five-pointed star
    pt1=turtle.pos()
    turtle.circle(-radius,72)
    pt2=turtle.pos()
    turtle.circle(-radius,72)
    pt3=turtle.pos()
    turtle.circle(-radius,72)
    pt4=turtle.pos()
    turtle.circle(-radius,72)
    pt5=turtle.pos()
    turtle.circle(-radius,72)
    turtle.right(90)
    turtle.forward(radius)
    pt6=turtle.pos()
    #draw the five-pointed star
    turtle.color('yellow','yellow')
    turtle.fill(True)
    turtle.goto(pt6)
    turtle.goto(pt3)
    turtle.goto(pt5)
    turtle.fill(False)
    turtle.fill(True)
    turtle.goto(pt6)
    turtle.goto(pt2)
    turtle.goto(pt5)
    turtle.fill(False)
    turtle.penup()
    turtle.goto(pt4)
    turtle.pendown()
    turtle.fill(True)
    turtle.goto(pt6)
    turtle.goto(pt1)
    turtle.goto(pt4)
    turtle.fill(False)
    turtle.fill(True)
    turtle.goto(pt6)
    turtle.goto(pt2)
    turtle.goto(pt4)
    turtle.fill(False)
    turtle.penup()
    turtle.goto(pt1)
    turtle.pendown()
    turtle.fill(True)
    turtle.goto(pt6)
    turtle.goto(pt3)
    turtle.goto(pt1)
    turtle.fill(False)
    turtle.penup()

#start the project
turtle.speed(5)
turtle.penup()
#draw the rectangle
star_x=-320
star_y=-260
len_x=660
len_y=440
draw_rectangle(star_x,star_y,len_x,len_y)
#draw the big star
pice=660/30
big_center_x=star_x+5*pice
big_center_y=star_y+len_y-pice*5
turtle.goto(big_center_x,big_center_y)
turtle.left(90)
turtle.forward(pice*3)
turtle.right(90)
draw_star(turtle.xcor(),turtle.ycor(),pice*3)
#draw the small star
turtle.goto(star_x+10*pice,star_y+len_y-pice*2)
turtle.left(turtle.towards(big_center_x,big_center_y)-turtle.heading())
turtle.forward(pice)
turtle.right(90)
draw_star(turtle.xcor(),turtle.ycor(),pice)
#draw the second star
turtle.goto(star_x+pice*12,star_y+len_y-pice*4)
turtle.left(turtle.towards(big_center_x,big_center_y)-turtle.heading())
turtle.forward(pice)
turtle.right(90)
draw_star(turtle.xcor(),turtle.ycor(),pice)
#draw the third
turtle.goto(star_x+pice*12,star_y+len_y-7*pice)
turtle.left(turtle.towards(big_center_x,big_center_y)-turtle.heading())
turtle.forward(pice)
turtle.right(90)
draw_star(turtle.xcor(),turtle.ycor(),pice)
#draw the final
turtle.goto(star_x+pice*10,star_y+len_y-9*pice)
turtle.left(turtle.towards(big_center_x,big_center_y)-turtle.heading())
turtle.forward(pice)
turtle.right(90)
draw_star(turtle.xcor(),turtle.ycor(),pice)

turtle.ht()
time.sleep(3)
os._exit(1)
 运行结果如下：http://s5/mw690/004igrvszy76HBEStzS14&690
另外这里也有一份别人的代码 最后画出来的效果是一样的，大家也可以看看：
# -*- coding: utf-8 –*-
 
import turtle
import math

def draw_polygon(aTurtle, size=50, n=3):
    ''' 绘制正多边形

    args:
        aTurtle: turtle对象实例
        size: int类型，正多边形的边长
        n: int类型，是几边形       
    '''
    for i in xrange(n):
        aTurtle.forward(size)
        aTurtle.left(360.0/n)

def draw_n_angle(aTurtle, size=50, num=5, color=None):
    ''' 绘制正n角形，默认为黄色

    args:
        aTurtle: turtle对象实例
        size: int类型，正多角形的边长
        n: int类型，是几角形   
        color: str， 图形颜色，默认不填色
    '''
    if color:
        aTurtle.begin_fill()
        aTurtle.fillcolor(color)
    for i in xrange(num):
        aTurtle.forward(size)
        aTurtle.left(360.0/num)
        aTurtle.forward(size)
        aTurtle.right(2*360.0/num)
    if color:
        aTurtle.end_fill()

def draw_5_angle(aTurtle=None, start_pos=(0,0), end_pos=(0,10), radius=100, color=None):
    ''' 根据起始位置、结束位置和外接圆半径画五角星

    args:
        aTurtle: turtle对象实例
        start_pos: int的二元tuple，要画的五角星的外接圆圆心
        end_pos: int的二元tuple，圆心指向的位置坐标点
        radius: 五角星外接圆半径
        color: str， 图形颜色，默认不填色   
    '''
    aTurtle = aTurtle or turtle.Turtle()
    size = radius * math.sin(math.pi/5)/math.sin(math.pi*2/5)
    aTurtle.left(math.degrees(math.atan2(end_pos[1]-start_pos[1], end_pos[0]-start_pos[0])))
    aTurtle.penup()
    aTurtle.goto(start_pos)
    aTurtle.fd(radius)
    aTurtle.pendown()
    aTurtle.right(math.degrees(math.pi*9/10))
    draw_n_angle(aTurtle, size, 5, color)

def draw_5_star_flag(times=20.0):
    ''' 绘制五星红旗

    args:
        times: 五星红旗的规格为30*20， times为倍数，默认大小为10倍， 即300*200
    '''
    width, height = 30*times, 20*times
    # 初始化屏幕和海龟
    window = turtle.Screen()
    aTurtle = turtle.Turtle()
    aTurtle.hideturtle()
    aTurtle.speed(10)
    # 画红旗
    aTurtle.penup()
    aTurtle.goto(-width/2, height/2)
    aTurtle.pendown()
    aTurtle.begin_fill()
    aTurtle.fillcolor('red')
    aTurtle.fd(width)
    aTurtle.right(90)
    aTurtle.fd(height)
    aTurtle.right(90)
    aTurtle.fd(width)
    aTurtle.right(90)
    aTurtle.fd(height)
    aTurtle.right(90)   
    aTurtle.end_fill()
    # 画大星星
    draw_5_angle(aTurtle, start_pos=(-10*times, 5*times), end_pos=(-10*times, 8*times), radius=3*times, color='yellow') 
    # 画四个小星星
    stars_start_pos = [(-5, 8), (-3, 6), (-3, 3), (-5, 1)]
    for pos in stars_start_pos:
        draw_5_angle(aTurtle, start_pos=(pos[0]*times, pos[1]*times), end_pos=(-10*times, 5*times), radius=1*times, color='yellow') 
    # 点击关闭窗口
    window.exitonclick()

if __name__ == '__main__':
        draw_5_star_flag()# -*- coding: utf-8 –*-
''' 对于turtle类的一些封装方法，包括画正多边形，正多角形和五星红旗。'''
__author__ = 'Hu Wenchao'

import turtle
import math

def draw_polygon(aTurtle, size=50, n=3):
    ''' 绘制正多边形

    args:
        aTurtle: turtle对象实例
        size: int类型，正多边形的边长
        n: int类型，是几边形       
    '''
    for i in xrange(n):
        aTurtle.forward(size)
        aTurtle.left(360.0/n)

def draw_n_angle(aTurtle, size=50, num=5, color=None):
    ''' 绘制正n角形，默认为黄色

    args:
        aTurtle: turtle对象实例
        size: int类型，正多角形的边长
        n: int类型，是几角形   
        color: str， 图形颜色，默认不填色
    '''
    if color:
        aTurtle.begin_fill()
        aTurtle.fillcolor(color)
    for i in xrange(num):
        aTurtle.forward(size)
        aTurtle.left(360.0/num)
        aTurtle.forward(size)
        aTurtle.right(2*360.0/num)
    if color:
        aTurtle.end_fill()

def draw_5_angle(aTurtle=None, start_pos=(0,0), end_pos=(0,10), radius=100, color=None):
    ''' 根据起始位置、结束位置和外接圆半径画五角星

    args:
        aTurtle: turtle对象实例
        start_pos: int的二元tuple，要画的五角星的外接圆圆心
        end_pos: int的二元tuple，圆心指向的位置坐标点
        radius: 五角星外接圆半径
        color: str， 图形颜色，默认不填色   
    '''
    aTurtle = aTurtle or turtle.Turtle()
    size = radius * math.sin(math.pi/5)/math.sin(math.pi*2/5)
    aTurtle.left(math.degrees(math.atan2(end_pos[1]-start_pos[1], end_pos[0]-start_pos[0])))
    aTurtle.penup()
    aTurtle.goto(start_pos)
    aTurtle.fd(radius)
    aTurtle.pendown()
    aTurtle.right(math.degrees(math.pi*9/10))
    draw_n_angle(aTurtle, size, 5, color)

def draw_5_star_flag(times=20.0):
    ''' 绘制五星红旗

    args:
        times: 五星红旗的规格为30*20， times为倍数，默认大小为10倍， 即300*200
    '''
    width, height = 30*times, 20*times
    # 初始化屏幕和海龟
    window = turtle.Screen()
    aTurtle = turtle.Turtle()
    aTurtle.hideturtle()
    aTurtle.speed(10)
    # 画红旗
    aTurtle.penup()
    aTurtle.goto(-width/2, height/2)
    aTurtle.pendown()
    aTurtle.begin_fill()
    aTurtle.fillcolor('red')
    aTurtle.fd(width)
    aTurtle.right(90)
    aTurtle.fd(height)
    aTurtle.right(90)
    aTurtle.fd(width)
    aTurtle.right(90)
    aTurtle.fd(height)
    aTurtle.right(90)   
    aTurtle.end_fill()
    # 画大星星
    draw_5_angle(aTurtle, start_pos=(-10*times, 5*times), end_pos=(-10*times, 8*times), radius=3*times, color='yellow') 
    # 画四个小星星
    stars_start_pos = [(-5, 8), (-3, 6), (-3, 3), (-5, 1)]
    for pos in stars_start_pos:
        draw_5_angle(aTurtle, start_pos=(pos[0]*times, pos[1]*times), end_pos=(-10*times, 5*times), radius=1*times, color='yellow') 
    # 点击关闭窗口
    window.exitonclick()

if __name__ == '__main__':
        draw_5_star_flag()