python如何在检入时显示复选框

import tkinter as tk

def show_checkboxes():
    # 创建主窗口
    root = tk.Tk()
    
    # 创建复选框
    checkbox1 = tk.Checkbutton(root, text="复选框1")
    checkbox1.pack()
    
    checkbox2 = tk.Checkbutton(root, text="复选框2")
    checkbox2.pack()
    
    checkbox3 = tk.Checkbutton(root, text="复选框3")
    checkbox3.pack()
    
    # 运行主循环
    root.mainloop()

# 调用函数显示复选框
show_checkboxes()