Trouble with Sort

[Askic]

It seems that you use Numpy arrays. I don't think built-in function will give you what you expect. I would create a list out of the array. Please have a look at the following code.

import numpy as np

A = np.array([[1,3],[6,4],[5, 0]])
print(A)

print('Sorted is: ')
print(np.sort(A))

# lista = []

# for i in range (len(A)):
#     lista.append(A[i])

# print (lista)
# B = sorted(lista, key = lambda e:e[1])
# print(B)