Python Pandas - 从 PeriodIndex 对象显示日期的季度
要从 PeriodIndex 对象中显示日期的季度,请使用 PeriodIndex.quarter 属性。
首先,导入所需库 −
import pandas as pd
创建一个 PeriodIndex 对象。PeriodIndex 是一个不变的 ndarray,用于保存表示常规时间段的有序值 −
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 对象 −
print("PeriodIndex...\n", periodIndex)
从 PeriodIndex 对象显示日期的季度 −
print("\nThe quarter of the date from the PeriodIndex object...\n", periodIndex.quarter)
示例
以下是代码 −
import pandas as pd # Create a PeriodIndex object # PeriodIndex is an immutable ndarray holding ordinal values indicating regular periods in time # 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") # Display PeriodIndex object print("PeriodIndex...\n", periodIndex) # Display PeriodIndex frequency print("\nPeriodIndex frequency object...\n", periodIndex.freq) # Display PeriodIndex frequency as string print("\nPeriodIndex frequency object as a string...\n", periodIndex.freqstr) # Display the quarter of the date from the PeriodIndex object print("\nThe quarter of the date from the PeriodIndex object...\n", periodIndex.quarter)
输出
将生成以下代码 −
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 quarter of the date from the PeriodIndex object... Int64Index([3, 4, 3, 2], dtype='int64')
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