好的，所以我有这个很长的程序。我的主题有问题。我所说的主题是指我构建的一个特定功能，用于在 Tkinter 中激活时更改背景和文本颜色。这是代码的缩短版本：
global theme
theme = 0
windows = []
buttons = []
labels = []
messageboxes = []
代码...
def flavor_0():
global theme
for w in windows:
w.config(bg = 'black')
for l in labels:
l.config(bg = 'black', fg = 'white')
for b in buttons:
b.config(activebackground = "grey", activeforeground = "white", bg = 'black', fg = 'white')
for i in listboxes:
i.config(bg = 'black', fg = 'white', relief = "ridge")
theme = 0
更多代码...（我在本节中定义了其他风格）
def set_theme():
global theme
global register
if theme == 0:
flavor_0()
elif theme == 1:
flavor_1()
elif theme == 2:
flavor_2()
elif theme == 3:
flavor_3()
elif theme == 4:
flavor_4()
更多代码
thememenu = Tkinter.Menu(menubar,tearoff = 0)
thememenu.add_command(label="Plain",command = flavor_0)
thememenu.add_command(label="Mint", command = flavor_1)
thememenu.add_command(label="Strawberry", command = flavor_2)
thememenu.add_command(label="Banana", command = flavor_3)
thememenu.add_command(label="Peanut", command = flavor_4)
menubar.add_cascade(label="Flavor", menu = thememenu)
def windowinator():
new = Tkinter.Tk()
windows.append(new)
set_theme()
windowinator = Tkinter.Button(root,text="New Window", command = windowinator)
windowinator.pack()
buttons.append(windowinator)
OK 终于搞定了。现在，当我运行它时，主题转换器可以工作。直到我使用“windowinator”。只要我之前打开的一个窗口没有关闭，就可以更改主题，没有任何问题。但是当我只关闭其中一个并尝试更改“主题”时：我得到一个普通的（无主题窗口）和这个尴尬的错误：
Exception in Tkinter callback
Traceback (most recent call last):
File "C:\Python27\lib\lib-tk\Tkinter.py", line 1410, in __call__
return self.func(*args)
File "C:\Users\Ahmet\Desktop\Fobby\FOBBY.py", line 70, in flavor_3
w.config(bg = 'black')
File "C:\Python27\lib\lib-tk\Tkinter.py", line 1202, in configure
return self._configure('configure', cnf, kw)
File "C:\Python27\lib\lib-tk\Tkinter.py", line 1193, in _configure
self.tk.call(_flatten((self._w, cmd)) + self._options(cnf))
TclError: invalid command name "."
那么谁能告诉我到底出了什么问题？