pandas.core.groupby.SeriesGroupBy.is_monotonic_increasing#

property SeriesGroupBy.is_monotonic_increasing[source]#

Return whether each group’s values are monotonically increasing.

Returns:
Series

See also

SeriesGroupBy.is_monotonic_decreasing

Return whether each group’s values are monotonically decreasing.

Examples

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