Python Tkinter:如何通过一个按钮更改两个字符串变量，并在两个按钮之间进行延迟？

import tkinter as tk
import time

def change_text():
    var1.set("新的字符串1")
    var2.set("新的字符串2")
    time.sleep(1)  # 添加1秒的延迟
    var1.set("原始字符串1")
    var2.set("原始字符串2")

root = tk.Tk()

var1 = tk.StringVar()
var2 = tk.StringVar()

label1 = tk.Label(root, textvariable=var1)
label1.pack()

label2 = tk.Label(root, textvariable=var2)
label2.pack()

button = tk.Button(root, text="更改字符串", command=change_text)
button.pack()

root.mainloop()