Python Pandas - 从 PeriodIndex 对象获取期间的月份数

要从PeriodIndex对象获取期间的月份编号，请使用PeriodIndex.month属性。

首先，导入所需的库-

import pandas as pd

创建一个PeriodIndex对象-

periodIndex = pd.PeriodIndex([2021-09-25 07:30:35, 2019-10-30 04:15:45, 2021-07-15 02:55:15, 2022-06-25 09:40:55], freq="T")

显示PeriodIndex频率-

print("\nPeriodIndex frequency object...\n", periodIndex.freq)

显示来自PeriodIndex对象的月份数。月份ID显示为一月=1，二月=2...十二月=12-

print("\nThe month number from the PeriodIndex object...\n", periodIndex.month)

示例

以下是代码-

import pandas as pd #CreateaPeriodIndexobject #PeriodIndexisanimmutablendarrayholdingordinalvaluesindicatingregularperiodsintime # We have set the frequency using the "freq" parameter periodIndex = pd.PeriodIndex([2021-09-25 07:30:35, 2019-10-30 04:15:45, 2021-07-15 02:55:15, 2022-06-25 09:40:55], freq="T") #DisplayPeriodIndexobject print("PeriodIndex...\n", periodIndex) #DisplayPeriodIndexfrequency print("\nPeriodIndex frequency object...\n", periodIndex.freq) #DisplayPeriodIndexfrequency as string print("\nPeriodIndex frequency object as a string...\n", periodIndex.freqstr) #DisplaymonthnumberfromthePeriodIndexobject #ThemonthiddisplayedasJanuary=1,February=2...December=12. print("\nThe month number from the PeriodIndex object...\n", periodIndex.month)输出结果

这将产生以下代码-

PeriodIndex... PeriodIndex([2021-09-25 07:30, 2019-10-30 04:15, 2021-07-15 02:55, 2022-06-25 09:40], dtype=period[T]) PeriodIndex frequency object... <Minute> PeriodIndex frequency object as a string... T The month number from the PeriodIndex object... Int64Index([9, 10, 7, 6], dtype=int64)