源码：

from turtle import * 

#画布为默认大小，将起笔移动到国旗的左上角
penup()
goto(-300,200)
pendown()

#绘制国旗的红色背景矩形
fillcolor("red")
begin_fill()
for i in range(2):
    speed(250)
    forward(600)
    right(90)
    forward(400)
    right(90)
end_fill()

#将起笔移动到坐标中心，并将起笔方向设置为x轴正方向
penup()
goto(-265,110)
seth(0)
pendown()

#在*绘制一颗五星
fillcolor('yellow')
begin_fill()
speed(1)
for i in range(5):
    speed(250)
    forward(30)
    left(72)
    forward(30)
    right(144)
end_fill()

x=["-210","-160","-160","-210"]
y=["180","140","75","25"]
for h in range(4):
    penup()
    goto(eval(x[h]),eval(y[h]))
    seth(0)
    pendown()
    fillcolor('yellow')
    begin_fill()
    speed(1)
    for i in range(5):
        speed(250)
        forward(10)
        left(72)
        forward(10)
        right(144)
    end_fill()