如何从tkinter获取输出消息？

import tkinter as tk

root = tk.Tk()

output_text = tk.Text(root, width=40, height=10)

output_text.pack()

output_message = output_text.get("1.0", tk.END)

import tkinter as tk

def get_output_message():
    output_message = output_text.get("1.0", tk.END)
    print(output_message)

root = tk.Tk()

output_text = tk.Text(root, width=40, height=10)
output_text.pack()

button = tk.Button(root, text="获取输出消息", command=get_output_message)
button.pack()

root.mainloop()