如何在pandas DataFrame中找到每行的集合差异？

import pandas as pd

data = {'A': ['apple, banana', 'orange, banana', 'apple, orange'],
        'B': ['banana, orange', 'apple', 'banana']}
df = pd.DataFrame(data)

def find_set_difference(row):
    set_A = set(row['A'].split(', '))
    set_B = set(row['B'].split(', '))
    difference = set_A - set_B
    return ', '.join(difference)

df['Difference'] = df.apply(find_set_difference, axis=1)