使用ipywidgets绘制子集Pandas数据框

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

data = {'Name': ['John', 'Emma', 'Peter', 'Olivia'],
        'Age': [25, 30, 35, 40],
        'City': ['New York', 'London', 'Paris', 'Tokyo']}
df = pd.DataFrame(data)

subset_dropdown = widgets.Dropdown(options=df.columns, description='Subset:')

output = widgets.Output()

def on_dropdown_change(change):
    subset = change.new
    with output:
        output.clear_output()
        display(df[subset])

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

display(subset_dropdown)
display(output)