如何获取ScrolledText的内容？

from tkinter import *
from tkinter.scrolledtext import ScrolledText

window = Tk()
text_area = ScrolledText(window, width=40, height=10)
text_area.pack()

content = text_area.get("1.0", END)

from tkinter import *
from tkinter.scrolledtext import ScrolledText

def get_content():
    content = text_area.get("1.0", END)
    print(content)

window = Tk()
text_area = ScrolledText(window, width=40, height=10)
text_area.pack()

button = Button(window, text="获取内容", command=get_content)
button.pack()

window.mainloop()