M10) Sums in a nested loop

The function in Listing 1 uses two accumulators while iterating over a rectangular nested list.

Listing 1: A Python function summing that applies two different summing methods to a rectangular nested list (Question 1).

def summing(cell_range):
    sum1 = 0  # Keep a total for the final report.

    for row in cell_range:
        sum2 = 0
        for value in row:
            sum1 = sum1 + value
            sum2 = sum2 + value

    print(f"sum1: {sum1} - sum2: {sum2}")


cells = [
    [1, 1, 1],
    [1, 1, 1],
    [1, 1, 1],
]

summing(cells)

What does the function print for the values in Table 1?

Table 1: Input values for the summing function (cells).

	A	B	C
1	1	1	1
2	1	1	1
3	1	1	1

1. sum1: 3 - sum2: 9
2. sum1: 9 - sum2: 3
3. sum1: 3 - sum2: 3
4. sum1: 9 - sum2: 9