如何在tkinter中定位滚动文本控件的滚动条位置？

import tkinter as tk

def get_scroll_position(text_widget):
    return text_widget.yview()[0]

root = tk.Tk()
text_widget = tk.Text(root)
text_widget.pack(fill='both', expand=True)

# 插入一些文本以便有足够的滚动空间
text_widget.insert('end', 'Lorem ipsum dolor sit amet, consectetur adipiscing elit. ...')

# 获取当前滚动条位置
scroll_position = get_scroll_position(text_widget)
print(f"Current scroll position: {scroll_position}")

root.mainloop()

def set_scroll_position(text_widget, position):
    text_widget.yview_moveto(position)

# 设置滚动条到特定位置，例如0.5表示垂直居中
set_scroll_position(text_widget, 0.5)

def on_scroll(*args):
    print("Scroll position changed")

text_widget.trace_add('write', on_scroll)