Python Pandas——从 PeriodIndex 对象中获取阶段的分钟
要从 PeriodIndex 对象获取阶段的分钟,请使用 PeriodIndex.minute 属性。
首先,导入所需的库 −
import pandas as pd
创建一个 PeriodIndex 对象。PeriodIndex 是一款不可变的 ndarray,其中包含表示常规时间间隔的有序值 −
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)
显示 PeriodIndex 对象中的分钟 −
print("\nThe minute from the PeriodIndex object...\n", periodIndex.minute)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 minute from the PeriodIndex object
print("\nThe minute from the PeriodIndex object...\n", periodIndex.minute)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 minute from the PeriodIndex object... Int64Index([30, 15, 55, 40], dtype='int64')
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