Python Pandas - 获取 PeriodIndex 对象的时间段秒数
要获取 PeriodIndex 对象中的时间段秒数,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,其中包含指示时间段中常规周期的序数 −
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 PeriodIndex 对象中的秒数 −
print("\nThe seconds from the PeriodIndex object...\n", periodIndex.second)
示例
以下为代码 −
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="S") # 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 seconds from the PeriodIndex object print("\nThe seconds from the PeriodIndex object...\n", periodIndex.second)
输出
这将生成以下代码 −
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')
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