Python Pandas - 從 PeriodIndex 物件返回頻率物件
要從 PeriodIndex 物件返回頻率物件,請使用 PeriodIndex.freq 屬性。
首先,匯入所需的庫 −
import pandas as pd
建立一個 PeriodIndex 物件。我們已使用 "freq" 引數設定了頻率 −
periodIndex = pd.PeriodIndex(['2021-09-25', '2019-10-30', '2020-11-20', '2021-07-15', '2022-06-12', '2023-07-10'], freq="D")
顯示 PeriodIndex 物件 −
print("PeriodIndex...\n", periodIndex)
顯示 PeriodIndex 頻率 −
print("\nPeriodIndex frequency...\n", periodIndex.freq)示例
以下為程式碼 −
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', '2019-10-30', '2020-11-20',
'2021-07-15', '2022-06-12', '2023-07-10'], freq="D")
# Display PeriodIndex object
print("PeriodIndex...\n", periodIndex)
# Display PeriodIndex frequency
print("\nPeriodIndex frequency...\n", periodIndex.freq)
# Display the month number i.e. 1 = January, 2 = February ... 12 = December
print("\nMonth number...\n", periodIndex.month)輸出
這會產生以下程式碼 −
PeriodIndex... PeriodIndex(['2021-09-25', '2019-10-30', '2020-11-20', '2021-07-15', '2022-06-12', '2023-07-10'], dtype='period[D]') PeriodIndex frequency... <Day> Month number... Int64Index([9, 10, 11, 7, 6, 7], dtype='int64')
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