python tkinter单选按钮随按钮更改

import tkinter as tk

def on_radio_button_change():
    selected_value = radio_var.get()
    # 根据选中的值执行相应的操作
    if selected_value == 1:
        # 执行操作1
        pass
    elif selected_value == 2:
        # 执行操作2
        pass
    elif selected_value == 3:
        # 执行操作3
        pass

root = tk.Tk()

radio_var = tk.IntVar()

radio_button1 = tk.Radiobutton(root, text="选项1", variable=radio_var, value=1, command=on_radio_button_change)
radio_button1.pack()

radio_button2 = tk.Radiobutton(root, text="选项2", variable=radio_var, value=2, command=on_radio_button_change)
radio_button2.pack()

radio_button3 = tk.Radiobutton(root, text="选项3", variable=radio_var, value=3, command=on_radio_button_change)
radio_button3.pack()

root.mainloop()