pandas.core.groupby.SeriesGroupBy.is_monotonic_decreasing

property SeriesGroupBy.is_monotonic_decreasing

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