Python Pandas - 指示 DateTimeIndex 中的日期是否为该年的最后一天
要检查 DateTimeIndex 中的日期是否是该年的最后一天,请使用 DateTimeIndex.is_year_end 属性。
首先,导入所需的库 -
import pandas as pd
使用周期 6 和频率作为 D(即天)创建一个DatetimeIndex -
datetimeindex = pd.date_range('2021-12-25 02:30:50', periods=6, tz='Australia/Adelaide', freq='2D')
显示 DateTimeIndex -
print("DateTimeIndex...\n", datetimeindex)
检查 DateTimeIndex 中的日期是否是该年的最后一天 -
print("\nCheck whether the date in DateTimeIndex is the last day of the year...\n", datetimeindex.is_year_end)
示例
以下是代码 -
import pandas as pd # DatetimeIndex with period 6 and frequency as D i.e. days # The timezone is Australia/Adelaide datetimeindex = pd.date_range('2021-12-25 02:30:50', periods=6, tz='Australia/Adelaide', freq='2D') # display DateTimeIndex print("DateTimeIndex...\n", datetimeindex) # display DateTimeIndex frequency print("\nDateTimeIndex frequency...\n", datetimeindex.freq) # Check whether the date in DateTimeIndex is the last day of the year print("\nCheck whether the date in DateTimeIndex is the last day of the year...\n", datetimeindex.is_year_end)
输出
这将生成以下代码 -
DateTimeIndex... DatetimeIndex(['2021-12-25 02:30:50+10:30', '2021-12-27 02:30:50+10:30', '2021-12-29 02:30:50+10:30', '2021-12-31 02:30:50+10:30', '2022-01-02 02:30:50+10:30', '2022-01-04 02:30:50+10:30'], dtype='datetime64[ns, Australia/Adelaide]', freq='2D') DateTimeIndex frequency... <2 * Days> Check whether the date in DateTimeIndex is the last day of the year... [False False False True False False]
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