简单事情复杂化了，这个程序实现这个效果还能再度精简很多代码，把类去掉吧，你能自行完成吗？

import turtle

class Window:

def __init__(self,width,height,bgimages,title="",alt_delay=120,bgcolor="white"):

self.screen = turtle.Screen()

self.screen.delay(0)

self.screen.setup(width,height)

self.screen.title(title)

self.screen.bgcolor(bgcolor)

self.bgimages = bgimages # 图片列表

self.amounts = len(bgimages)

self.index = 0 # 索引列表

self.alt_delay = alt_delay # 切换背景图延时

if self.amounts==1: # 只有一张背景图则设为背景，不切换

self.screen.bgpic(bgimages[0])

elif self.amounts >1: # 超过一张背景图则不断地换背景图

self.alt_image()

def bgcolor(self,color):

self.screen.bgcolor(color)

def bgpic(self,pic):

self.screen.bgpic(pic)

def alt_image(self):

self.bgpic(self.bgimages[self.index])

self.index = self.index + 1

self.index = self.index % self.amounts

self.screen.ontimer(self.alt_image,self.alt_delay)

def run(self):

self.screen.mainloop()

if __name__== "__main__":

images = ["girl1/0001.png",

"girl1/0002.png",

"girl1/0003.png",

"girl1/0004.png",

"girl1/0005.png",

"girl1/0006.png",

"girl1/0007.png",

"girl1/0008.png",

"girl1/0009.png",

"girl1/0010.png",

"girl1/0011.png",

"girl1/0012.png"

]

window = Window(480,360,images,"女孩跳舞")

window.run ()