如何在保持数据类型的同时，将大量的timedate数据放入dataframe的子集？

import pandas as pd
from datetime import datetime

dates = [datetime(2022, 1, 1), datetime(2022, 1, 2), datetime(2022, 1, 3), ...]

df = pd.DataFrame()

df.index = pd.DatetimeIndex(dates)

df['column1'] = [value1, value2, value3, ...]
df['column2'] = [value1, value2, value3, ...]

subset = df['2022-01-01':'2022-01-10']

weekly_subset = df.resample('W').mean()