pandas.core.groupby.DataFrameGroupBy.cumsum

DataFrameGroupBy.cumsum(axis=None, dtype=None, out=None, skipna=True, **kwargs)

Return cumulative sum over requested axis.

Parameters:

axis : {index (0), columns (1)}

skipna : boolean, default True

Exclude NA/null values. If an entire row/column is NA, the result will be NA

Returns:

sum : Series