清除tkinter中的上一个标签

import tkinter as tk

def clear_label():
    label.destroy()

root = tk.Tk()
label = tk.Label(root, text="这是一个标签")
label.pack()

button = tk.Button(root, text="清除标签", command=clear_label)
button.pack()

root.mainloop()

import tkinter as tk

def update_label():
    label.configure(text="更新后的标签文本")

root = tk.Tk()
label = tk.Label(root, text="这是一个标签")
label.pack()

button = tk.Button(root, text="更新标签", command=update_label)
button.pack()

root.mainloop()