如何安全地退出线程上的Toplevel()窗口

import threading
import tkinter as tk

class MyThread(threading.Thread):
    def __init__(self):
        threading.Thread.__init__(self)
        self.window = tk.Toplevel()

    def run(self):
        self.window.mainloop()

if __name__ == "__main__":
    thread = MyThread()
    thread.start()

thread.window.destroy()

import threading
import tkinter as tk

class MyThread(threading.Thread):
    def __init__(self):
        threading.Thread.__init__(self)
        self.window = tk.Toplevel()

    def run(self):
        self.window.mainloop()

if __name__ == "__main__":
    thread = MyThread()
    thread.start()

    # 在需要退出窗口的地方
    thread.window.destroy()