most_userful.py

import tkinter as tk
import tkinter.messagebox

def message_and_close():
    res = tk.messagebox.askquestion("Close program", "Are you sure?", icon='warning')
    if res == "yes":
        root.destroy()

root = tk.Tk()
button_frame = tk.Frame(root)
button_frame.pack()
reset_button = tk.Button(button_frame, text="Close", command=message_and_close)
reset_button.grid()

root.mainloop()