bigframes.pandas.DataFrame.cumsum#

DataFrame.cumsum()[source]#

Return cumulative sum over columns.

Returns a DataFrame of the same size containing the cumulative sum.

Examples:

>>> df = bpd.DataFrame({"A": [3, 1, 2], "B": [1, 2, 3]})
>>> df
    A       B
0   3       1
1   1       2
2   2       3

[3 rows x 2 columns]

>>> df.cumsum()
    A       B
0   3       1
1   4       3
2   6       6

[3 rows x 2 columns]