在tkinter中销毁toplevel后如何检查toplevel是否存在？

import tkinter as tk

def destroy_toplevel():
    toplevel.destroy()
    check_existence()

def check_existence():
    if toplevel.winfo_exists():
        print("Toplevel窗口存在")
    else:
        print("Toplevel窗口不存在")

root = tk.Tk()

button = tk.Button(root, text="销毁Toplevel", command=destroy_toplevel)
button.pack()

toplevel = tk.Toplevel(root)

root.mainloop()