如何清理包含datetime和date的Pandas数据框列？

import pandas as pd
from datetime import datetime, date

data = {'A': [datetime(2022, 1, 1), datetime(2022, 1, 2), datetime(2022, 1, 3)],
        'B': [date(2022, 1, 1), date(2022, 1, 2), date(2022, 1, 3)],
        'C': [1, 2, 3]}
df = pd.DataFrame(data)

print(df)

           A           B  C
0 2022-01-01  2022-01-01  1
1 2022-01-02  2022-01-02  2
2 2022-01-03  2022-01-03  3

df['A'] = df['A'].dt.strftime('%Y-%m-%d %H:%M:%S')
df['B'] = df['B'].apply(lambda x: x.strftime('%Y-%m-%d'))

print(df)

            A           B  C
0  2022-01-01  2022-01-01  1
1  2022-01-02  2022-01-02  2
2  2022-01-03  2022-01-03  3