在给定另一列的值的情况下，减去pandas数据帧中的连续时间帧

import pandas as pd

df = pd.DataFrame({'timestamp': ['2022-01-01 00:00:00', '2022-01-01 00:01:00', '2022-01-01 00:02:00'],
                   'value': [10, 20, 30]})

df['timestamp'] = pd.to_datetime(df['timestamp'])

df['time_diff'] = df['timestamp'].shift(-1) - df['timestamp']

df['time_diff'] = df['time_diff'].dt.total_seconds()

import pandas as pd

df = pd.DataFrame({'timestamp': ['2022-01-01 00:00:00', '2022-01-01 00:01:00', '2022-01-01 00:02:00'],
                   'value': [10, 20, 30]})

df['timestamp'] = pd.to_datetime(df['timestamp'])
df['time_diff'] = df['timestamp'].shift(-1) - df['timestamp']
df['time_diff'] = df['time_diff'].dt.total_seconds()

print(df)

            timestamp  value  time_diff
0 2022-01-01 00:00:00     10       60.0
1 2022-01-01 00:01:00     20       60.0
2 2022-01-01 00:02:00     30        NaN