用Python编写一段程序

from turtle import *
import random

color = ['red','black','blue','green','cyan','orange']
y = 150
for i in range(5):
    radius = random.randint(30,40)
    y = y-2*radius
    penup() #提起画笔
    goto(0, y) #起始坐标
    pendown()
    begin_fill() #填充颜色
    c=random.choice(color)
    fillcolor(c)#填充红色
    circle(radius)
    end_fill()

penup()
width(5)
goto(0,y)
pendown()
seth(-90) 
pencolor("yellow")#填充红色
forward(50)

done()