Finding the Row with largest Sum in a matrix

matrix = [[1, 2, 3], [4, 5, 6], [7, 8, 9]]

maxRow = sum(matrix[0])
indexOfMaxRow = 0

for i in range(1, len(matrix)):
    if sum(matrix[i]) > maxRow:
        maxRow = sum(matrix[i])
        indexOfMaxRow = i


print("Row", indexOfMaxRow, "has the maximum sum of ", maxRow)