如何在Python Pandas中计算跨组的移位列

import pandas as pd

# 创建一个示例数据集
data = {'Group': ['A', 'A', 'B', 'B', 'B', 'C', 'C'],
        'Value': [1, 2, 3, 4, 5, 6, 7]}
df = pd.DataFrame(data)

# 按照Group进行分组，并计算移位列
df['Shifted_Value'] = df.groupby('Group')['Value'].shift()

print(df)

  Group  Value  Shifted_Value
0     A      1            NaN
1     A      2            1.0
2     B      3            NaN
3     B      4            3.0
4     B      5            4.0
5     C      6            NaN
6     C      7            6.0