Python Pandas - 从 PeriodIndex 对象中获取时间段月份数
要从 PeriodIndex 对象获取时间段的月份数,请使用 PeriodIndex.month 属性。
首先,导入必需的库 −
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)
从 PeriodIndex 对象中显示月份数。月份显示为 1 月=1、2 月=2 ... 12 月=12 −
print("\nThe month number from the PeriodIndex object...\n", periodIndex.month)
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="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 month number from the PeriodIndex object # The month id displayed as January=1, February=2 ... December=12. print("\nThe month number from the PeriodIndex object...\n", periodIndex.month)
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 month number from the PeriodIndex object... Int64Index([9, 10, 7, 6], dtype='int64')
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