如何在继续之前等待Tkinter TopLevel窗口的结果？

import tkinter as tk

def open_dialog():
    dialog = tk.Toplevel()
    dialog.title("Dialog")
    
    result = tk.StringVar()
    
    def on_ok():
        result.set("OK")
        dialog.destroy()
    
    def on_cancel():
        result.set("Cancel")
        dialog.destroy()
    
    ok_button = tk.Button(dialog, text="OK", command=on_ok)
    ok_button.pack()
    
    cancel_button = tk.Button(dialog, text="Cancel", command=on_cancel)
    cancel_button.pack()
    
    dialog.result = result  # 设置窗口的结果属性

root = tk.Tk()

open_dialog_button = tk.Button(root, text="Open Dialog", command=open_dialog)
open_dialog_button.pack()

root.mainloop()

# 在这里等待TopLevel窗口的结果
print("Dialog result:", open_dialog_button.result.get())