如何比较pandas数据帧中的日期时间

import pandas as pd

# 创建示例数据帧
data = {'dates': ['2022-01-01', '2022-01-02', '2022-01-03'],
        'values': [1, 2, 3]}
df = pd.DataFrame(data)

# 将日期列转换为日期时间类型
df['dates'] = pd.to_datetime(df['dates'])

# 比较日期
print(df['dates'] > '2022-01-01')

# 比较时间
print(pd.to_datetime('2022-01-02') > df['dates'])

# 比较日期范围
start_date = pd.to_datetime('2022-01-02')
end_date = pd.to_datetime('2022-01-03')
print(df[df['dates'].between(start_date, end_date)])

# 比较时间差
diff = df['dates'] - pd.to_datetime('2022-01-02')
print(diff)