pandas.Series.dt.is_year_end — pandas 2.2.3 documentation (original) (raw)

Series.dt.is_year_end[source]#

Indicate whether the date is the last day of the year.

Returns:

Series or DatetimeIndex

The same type as the original data with boolean values. Series will have the same name and index. DatetimeIndex will have the same name.

See also

is_year_start

Similar property indicating the start of the year.

Examples

This method is available on Series with datetime values under the .dt accessor, and directly on DatetimeIndex.

dates = pd.Series(pd.date_range("2017-12-30", periods=3)) dates 0 2017-12-30 1 2017-12-31 2 2018-01-01 dtype: datetime64[ns]

dates.dt.is_year_end 0 False 1 True 2 False dtype: bool

idx = pd.date_range("2017-12-30", periods=3) idx DatetimeIndex(['2017-12-30', '2017-12-31', '2018-01-01'], dtype='datetime64[ns]', freq='D')

idx.is_year_end array([False, True, False])