如何在tkinter中从文本小部件中获取最后输入的内容

import tkinter as tk

def get_last_input():
    content = entry.get()
    print("最后输入的内容是：", content)

root = tk.Tk()

entry = tk.Entry(root)
entry.pack()

button = tk.Button(root, text="获取最后输入的内容", command=get_last_input)
button.pack()

root.mainloop()