Python Pandas - PeriodIndex 객체의 문자열 표현 형식 지정

PeriodIndex 개체의 문자열 표현 형식을 지정하려면 periodIndex.strftime()을 사용하세요. 방법. 형식 지정자를 인수로 설정합니다.

먼저 필요한 라이브러리를 가져옵니다 -

import pandas as pd

PeriodIndex 개체를 만듭니다. PeriodIndex는 일정 기간을 나타내는 서수 값을 보유하는 변경할 수 없는 ndarray입니다. −

periodIndex = pd.PeriodIndex(['2021-09-25 07:30:35', '2019-10-30 04:15:45',
'2020-07-15 02:55:15', '2022-06-25 09:40:55'], freq="Y")

PeriodIndex 개체 표시 -

print("PeriodIndex...\n", periodIndex)

형식화된 결과 표시 -

print("\nString representation (format with different directives)...\n",
periodIndex.strftime('%b. %d, %Y was a %A'))

예

다음은 코드입니다 -

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',
'2020-07-15 02:55:15', '2022-06-25 09:40:55'], freq="Y")

# 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 the formatted result
print("\nString representation (format with different directives)...\n",
periodIndex.strftime('%b. %d, %Y was a %A'))

출력

이것은 다음 코드를 생성합니다 -

PeriodIndex...
PeriodIndex(['2021', '2019', '2020', '2022'], dtype='period[A-DEC]')

PeriodIndex frequency object...
<YearEnd: month=12>

PeriodIndex frequency object as a string...
A-DEC

String representation (format with different directives)...
Index(['Dec. 31, 2021 was a Friday', 'Dec. 31, 2019 was a Tuesday', 'Dec. 31, 2020 was a Thursday', 'Dec. 31, 2022 was a Saturday'],
dtype='object')