DataFrameGroupBy.idxmin(axis=0, skipna=True) Return index of first occurrence of minimum over requested

GroupBy.transform(func, *args, **kwargs)

GroupBy.cumcount(ascending=True)

DataFrameGroupBy.size()

DataFrameGroupBy.describe(percentiles=None, include=None, exclude=None) Generate various summary

GroupBy.mean(*args, **kwargs)

DataFrameGroupBy.bfill(limit=None)

SeriesGroupBy.nlargest(*args, **kwargs)

GroupBy.prod()

DataFrameGroupBy.cumsum(axis=0, *args, **kwargs)