Indicator for whether the date is the last day of a quarter.
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
quarterReturn the quarter of the date.
is_quarter_startSimilar property indicating the quarter start.
Examples
This method is available on Series with datetime values under the .dt accessor, and directly on DatetimeIndex.
>>> df = pd.DataFrame({'dates': pd.date_range("2017-03-30",
... periods=4)})
>>> df.assign(quarter=df.dates.dt.quarter,
... is_quarter_end=df.dates.dt.is_quarter_end)
dates quarter is_quarter_end
0 2017-03-30 1 False
1 2017-03-31 1 True
2 2017-04-01 2 False
3 2017-04-02 2 False
>>> idx = pd.date_range('2017-03-30', periods=4)
>>> idx
DatetimeIndex(['2017-03-30', '2017-03-31', '2017-04-01', '2017-04-02'],
dtype='datetime64[ns]', freq='D')
>>> idx.is_quarter_end
array([False, True, False, False])
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https://pandas.pydata.org/pandas-docs/version/2.3.0/reference/api/pandas.DatetimeIndex.is_quarter_end.html