我在屏幕上显示图像两秒钟然后被破坏的功能遇到麻烦。当程序运行函数时，初始调用在程序上可以正常运行，但是如果随后通过tkinter中内置的按钮调用了函数，则会出现错误。

appcwd = os.getcwd()
user32 = ctypes.windll.user32
screensize = user32.GetSystemMetrics(0), user32.GetSystemMetrics(1)
size = str(screensize[0])+'x'+str(screensize[1])

def wlcm_scrn(event=None):
    def destroy_wlcm(event=None):
        wlcm_scrn.destroy()
    global appcwd
    global screensize
    wlcm_scrn = tkinter.Tk()
    file=appcwd+"\\Run_Files\\splash.gif"
    splsh_img = tkinter.PhotoImage(file=file) 
    splosh = tkinter.Label(wlcm_scrn,image=splsh_img)
    wlcmh = splsh_img.height()/2
    wlcmw = splsh_img.width()/2
    splosh.pack()
    wlcm_scrn.config(bg='black')
    wlcm_scrn.overrideredirect(True)
    wlcm_scrn.bind("<Escape>",destroy_wlcm)
    wlxym = '+'+str(int((screensize[0]/2)-wlcmw))+'+'+str(int((screensize[1]/2)-wlcmh))
    wlcm_scrn.geometry(wlxym)
    wlcm_scrn.wm_attributes("-topmost", 1)
    wlcm_scrn.after(2000,destroy_wlcm)
    wlcm_scrn.mainloop()

wlcm_scrn() #Call through procedure.

调用该功能的按钮。

view_img = tkinter.Button(cfrm,text='Show splash image',command=wlcm_scrn)

通过按钮命令调用时的错误消息。

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python33\lib\tkinter\__init__.py", line 1475, in __call__
    return self.func(*args)
  File "C:\Python33\POS_Solution\Rattle_Hum_POS.py", line 1755, in run_wlcm_scrn
    wlcm_scrn()
  File "C:\Python33\POS_Solution\Rattle_Hum_POS.py", line 34, in wlcm_scrn
    splosh = tkinter.Label(wlcm_scrn,image=splsh_img)
  File "C:\Python33\lib\tkinter\__init__.py", line 2596, in __init__
    Widget.__init__(self, master, 'label', cnf, kw)
  File "C:\Python33\lib\tkinter\__init__.py", line 2075, in __init__
    (widgetName, self._w) + extra + self._options(cnf))
_tkinter.TclError: image "pyimage3" doesn't exist

什么是“ pyimage3”，为什么不存在？任何帮助将不胜感激。谢谢。