Python row major to column major order vector

Question

Having a matrix like

ma = [[0.343, 0.351, 0.306], [0.145, 0.368, 0.487]]

I want to get a vector like:

[0.343, 0.145, 0.351,         


        

Answer 1

>>> A = ([[0, 1, 2],
...        [3, 4, 5],
...        [6, 7, 8]])
>>> 
>>> print(A)
[[0, 1, 2], [3, 4, 5], [6, 7, 8]]
>>> 
>>> [y  for x in [[row[i] for row in A] for i in range(len(A[0]))] for y in x]
[0, 3, 6, 1, 4, 7, 2, 5, 8]
>>> 
>>>