如何调用Tkinter Text Widget的None输出作为IF参数？

import tkinter as tk
root = tk.Tk()

text_widget = tk.Text(root)
text_widget.insert("1.0", "Hello World")
text_widget.pack()

def process_text():
    if text_widget.get("1.0", "end-1c") == "":
        print("Text Widget输出为None")
    else:
        print("Text Widget输出不为None")

button = tk.Button(root, text="检查输出", command=process_text)
button.pack()

root.mainloop()