Python Pandas - 从 PeriodIndex 对象获取周期的秒数
要从 PeriodIndex 对象获取周期的秒数，请使用PeriodIndex.second属性。
首先，导入所需的库 -
import pandas as pd
创建一个 PeriodIndex 对象。PeriodIndex 是一个不可变的 ndarray，其中包含指示定期时间段的序数值 -
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="S")
显示 PeriodIndex 对象 -
print("PeriodIndex...\n", periodIndex)显示来自 PeriodIndex 对象的秒数 -
print("\nThe seconds from the PeriodIndex object...\n", periodIndex.second)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" parameterperiodIndex = 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="S")# Display PeriodIndex objectprint("PeriodIndex...\n", periodIndex)# Display PeriodIndex frequencyprint("\nPeriodIndex frequency object...\n", periodIndex.freq)# Display PeriodIndex frequency as stringprint("\nPeriodIndex frequency object as a string...\n", periodIndex.freqstr)# Display seconds from the PeriodIndex objectprint("\nThe seconds from the PeriodIndex object...\n", periodIndex.second)输出结果
这将产生以下代码 -
PeriodIndex... 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'], dtype='period[S]') PeriodIndex frequency object... <Second> PeriodIndex frequency object as a string... S The seconds from the PeriodIndex object... Int64Index([35, 45, 15, 55], dtype='int64')