如何使用ipywidgets在VBOX中显示pandas数据帧

import ipywidgets as widgets
from IPython.display import display
import pandas as pd

vbox = widgets.VBox()

output = widgets.Output()

def update_output(df):
    with output:
        output.clear_output()
        display(df)

button = widgets.Button(description="显示数据帧")

def on_button_clicked(b):
    df = pd.DataFrame({'列1': [1, 2, 3], '列2': [4, 5, 6]})
    update_output(df)

button.on_click(on_button_clicked)

vbox.children = [button, output]

display(vbox)