用Python的turtle模块画国旗

eddik

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()
　　#draw the five-pointed star
　　turtle.color('yellow','yellow')
　　turtle.fill(True)
　　turtle.goto(pt3)
　　turtle.goto(pt1)
　　turtle.goto(pt4)
　　turtle.goto(pt2)
　　turtle.goto(pt5)
　　turtle.fill(False)
　　#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)