如何在tkinter画布上引入小部件更新之间的延迟？

import tkinter as tk

root = tk.Tk()
canvas = tk.Canvas(root, width=400, height=400)
canvas.pack()

label = tk.Label(canvas, text="Hello World")

def update_label():
    label.config(text="Updated")

canvas.after(1000, update_label)  # 延迟1秒后调用update_label函数

import tkinter as tk

def update_label():
    label.config(text="Updated")

root = tk.Tk()
canvas = tk.Canvas(root, width=400, height=400)
canvas.pack()

label = tk.Label(canvas, text="Hello World")
label.pack()

canvas.after(1000, update_label)

root.mainloop()