如何在python中获得合并表列的重采样？

import pandas as pd

# 创建表格1
data1 = {'日期': ['2022-01-01', '2022-01-02', '2022-01-03'],
         '数值1': [10, 20, 30]}
df1 = pd.DataFrame(data1)

# 创建表格2
data2 = {'日期': ['2022-01-01', '2022-01-02', '2022-01-03'],
         '数值2': [100, 200, 300]}
df2 = pd.DataFrame(data2)

# 合并表格
df = pd.merge(df1, df2, on='日期')

df['日期'] = pd.to_datetime(df['日期'])
df.set_index('日期', inplace=True)

# 按天重采样
df_resampled = df.resample('D').sum()

# 按周重采样
df_resampled = df.resample('W').sum()

# 按月重采样
df_resampled = df.resample('M').sum()