Python --- turtle module --- flag painting

This code is from the Internet to learn, if help is very honored!

#China（ZhongGuo）

#Python--五星红旗Python--五星红旗Python--五星红旗Python--五星红旗Python--五星红旗

import turtle

import math

def draw_n_angle(aTurtle, size=50, num=5, color=None):

 

    if color:

        aTurtle.begin_fill()

        aTurtle.fillcolor(color)

    for i in range(num):#hua yige wujiaoxing

        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=(0,0), radius=0, color=None):

   

    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])))#jisuan liangdian zhi jian de xieqingjiao

    aTurtle.penup()

    aTurtle.goto(start_pos)

    aTurtle.fd(radius)

    aTurtle.pendown()

    aTurtle.right(math.degrees(math.pi*9/10))#zhaodao wujiaoixngweizhi

    draw_n_angle(aTurtle, size, 5, color)#huawujiaoxing`在这里插入代码片`

 

def draw_5_star_flag(times=20.0):    

  

    width, height = 30*times, 20*times

 

    window = turtle.Screen()

    aTurtle = turtle.Turtle()

    aTurtle.hideturtle()

    aTurtle.speed(10)

 

    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()                                           # hua hongse qi

    draw_5_angle(aTurtle, start_pos=(-10*times, 5*times), end_pos=(-10*times, 8*times), radius=3*times, color='yellow')   # dawujiaoxing

    stars_start_pos = [(-5, 8), (-3, 6), (-3, 3), (-5, 1)]#zidian     

    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')  #sigexiaowujiaoxing

   

    window.exitonclick()

 

if __name__ == '__main__':

        draw_5_star_flag()

(The god of creation online, you can not understand the message, the time will be the solution (provided I would Python- flag) !!)