使用.destroy()关闭弹出窗口的按钮会显示未定义弹出窗口的错误。使用Python tkinter

import tkinter as tk

def close_window():
    if window.winfo_exists():  # 检查窗口是否存在
        window.destroy()

window = tk.Tk()
button = tk.Button(window, text="关闭窗口", command=close_window)
button.pack()
window.mainloop()

import tkinter as tk

def create_and_close_window():
    window = tk.Toplevel()
    button = tk.Button(window, text="关闭窗口", command=window.destroy)
    button.pack()
    window.protocol("WM_DELETE_WINDOW", window.destroy)  # 确保点击窗口关闭按钮也能关闭窗口

root = tk.Tk()
main_button = tk.Button(root, text="打开新窗口", command=create_and_close_window)
main_button.pack()
root.mainloop()

import tkinter as tk
import threading

def close_window_from_thread():
    if window.winfo_exists():
        window.destroy()

def thread_function():
    threading.Thread(target=close_window_from_thread).start()

window = tk.Tk()
button = tk.Button(window, text="关闭窗口", command=thread_function)
button.pack()
window.mainloop()