Question

How to sum 2D list (array) (matrix) cols in Python

Answer 1

matrix = [[11, 42, 53],
          [78, 50, 989]]

sum_cols = [sum(x) for x in zip(*matrix)]

print(sum_cols)


'''
run:

[89, 92, 1042]

'''

 

70+ SQL courses for beginners and professionals

Answer 2

matrix = [[11, 42, 53],
          [78, 50, 989]]

sum_cols = [sum(x) for x in zip(*matrix)]

for i in range(0, len(sum_cols)):
    print(sum_cols[i])


'''
run:

89
92
1042

'''

 

70+ SQL courses for beginners and professionals