如何使用小部件在Dataframe select语句中传递动态列名

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

data = {'Name': ['John', 'Anna', 'Peter', 'Linda'],
        'Age': [25, 28, 31, 35],
        'City': ['New York', 'Paris', 'London', 'Sydney']}
df = pd.DataFrame(data)

column_names = df.columns.tolist()  # 获取Dataframe的列名列表
dropdown = widgets.Dropdown(options=column_names, description='Column:')

output = widgets.Output()

def on_dropdown_change(change):
    with output:
        output.clear_output()  # 清空输出区域
        selected_column = change.new
        column_data = df[selected_column]
        display(column_data)

dropdown.observe(on_dropdown_change, names='value')

display(dropdown)
display(output)