DataFrameGroupBy.take(indices, axis=0, convert=True, is_copy=True, **kwargs) Analogous to ndarray.take

GroupBy.last()

GroupBy.first()

Grouper.ax

DataFrameGroupBy.diff(periods=1, axis=0) 1st discrete difference of object

DataFrameGroupBy.skew(axis=None, skipna=None, level=None, numeric_only=None, **kwargs) Return unbiased

DataFrameGroupBy.cummax(axis=None, skipna=True, *args, **kwargs) Return cumulative max over requested

DataFrameGroupBy.boxplot(grouped, subplots=True, column=None, fontsize=None, rot=0, grid=True, ax=None, figsize=None

DataFrameGroupBy.agg(arg, *args, **kwargs)

GroupBy.sum()