Question

How to get 2D numpy array rows that the sum of their elements are even in Python

Answer 1

import numpy as np
 
arr = np.array([[8, 2],
                [3, 4],
                [2, 2],
                [12, 4]])

sum_arr_rows = arr.sum(1)

print(sum_arr_rows)
print
print(arr[sum_arr_rows % 2 == 0])

               

 
'''
run:
 
[10  7  4 16] 

[[ 8  2] 
 [ 2  2] 
 [12  4]]
 
'''

 

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