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我想用 2 个选项卡在我的 GUI 中制作带有颜色的背景，我遇到了这个问题，也许有一些建议？

这是代码：

colors = ["Blue", "Gold", "Red"]

def radCall():
    radSel=radVar.get()
    if radSel == 0: tab1.configure(bg=colors[0])
    elif radSel == 1: tab1.configure(bg=colors[1])
    elif radSel == 2: tab1.configure(bg=colors[2])

radVar = tk.IntVar()
radVar.set(99)

for col in range(3):
    curRad = tk.Radiobutton(mighty, text=colors[col], variable=radVar, 
                            value=col, command=radCall)
    curRad.grid(column=col, row=13, sticky=tk.W)

这是问题所在：

Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Users\HP\AppData\Local\Programs\Python\Python39\lib\tkinter\__init__.py", line 1892, in __call__                           >C:/Users/HP/
    return self.func(*args)                                        top/Kuliah/Se
  File "c:\Users\HP\Desktop\Kuliah\Semester 2\Information TechnologI_jualbeli_Day\Python\week5\Informasi Jual Beli\GUI_jualbeli_Dazan.py", line 277, in radCall
if radSel == …