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')

更新日期:2021-10-21

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