Python：从turtle模块

Question

我试图在乌龟窗口中更改背景图片。

代码只读为：

import turtle
turtle.bgpic("france53.gif")

乌龟窗口显示为空白，我收到以下错误消息：

Traceback (most recent call last):

File "<ipython-input-25-45373f8f3ea2>", line 1, in <module>
bgpic("france53.gif")

File "<string>", line 1, in bgpic

File "/Users/danielcharrier/anaconda/lib/python3.4/turtle.py", line 1482, in bgpic
self._setbgpic(self._bgpic, self._bgpics[picname])

File "/Users/danielcharrier/anaconda/lib/python3.4/turtle.py", line 738, in _setbgpic
self.cv.itemconfig(item, image=image)

File "<string>", line 1, in itemconfig

File "/Users/danielcharrier/anaconda/lib/python3.4/tkinter/__init__.py", line 2416, in itemconfigure
return self._configure(('itemconfigure', tagOrId), cnf, kw)

File "/Users/danielcharrier/anaconda/lib/python3.4/tkinter/__init__.py", line 1310, in _configure
self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))

TclError: image "pyimage12" doesn't exist

文件＆＃34; france53.gif＆＃34;在工作目录中。我该怎么做才能让它发挥作用？

我在Mac OS X上使用Anaconda发行版。

谢谢！