Write command to print cumulative sum of columns Rainfall and Evaporation in the dataframe wdf given below.

Q. Write command to print cumulative sum of columns Rainfall and Evaporation in the dataframe wdf given below.

	minTemp	maxTemp	Rainfall	Evaporation
0	1	8.0	24.3	0.0
1	2	14.0	26.9	3.6
2	3	13.7	23.4	3.6
3	4	13.3	15.5	39.8
4	5	7.6	16.1	2.8
5	6	6.2	16.9	0.0
6	7	6.1	18.2	0.2
7	8	8.3	17.8	0.0
8	9	8.8	19.5	0.0
9	10	8.4	22.8	16.2
10	11	9.1	25.2	0.0
11	12	8.5	27.3	0.2
12	13	10.1	27.9	0.0
13	14	12.1	30.9	0.0
14	15	10.1	31.2	0.0
15	16	12.4	32.1 	0.0
16	17	13.8	31.2	0.0
17	18	11.7	30.0	1.2
18	19	12.4	32.3	0.6
19	20	15.6	33.4	0.0
20	21	15.3	33.4	0.0

Answer :-

wdf[["Rainfall", "Evaporation"]].apply(np.cumsum)

    Rainfall    Evaporation
0    24.3    0.0
1    51.2    3.6
2    74.6    7.2
3    90.1    47.0
4    106.2    49.8
5    123.1    49.8
6    141.3    50.0
7    158.3    50.0
8    177.8    50.0
9    200.6    66.2
10    225.8    66.2
11    253.1    66.4
12    281.0    66.4
13    311.9    66.4
14    343.1    66.4
15    375.2    66.4
16    406.4    66.4
17    436.4    67.6
18    468.7    68.2
19    502.1    68.2
20    535.5    68.2