pandas.core.groupby.SeriesGroupBy.is_monotonic_decreasing — pandas 2.2.3 documentation (original) (raw)

property SeriesGroupBy.is_monotonic_decreasing[source]#

Return whether each group’s values are monotonically decreasing.

Returns:

Series

Examples

s = pd.Series([2, 1, 3, 4], index=['Falcon', 'Falcon', 'Parrot', 'Parrot']) s.groupby(level=0).is_monotonic_decreasing Falcon True Parrot False dtype: bool