How to reshape () the sum of odd and even rows in numpy

Question

Example1 :

a = np.array([[[1,11,111],[2,22,222]],
              [[3,33,333],[4,44,444]],
              [[5,55,555],[6,66,666]],[[7,77,777],[8,88,888]]])

>>         


        

Answer 1

>>> np.array(list(zip(*a))).reshape(2,12)
array([[  1,  11, 111,   3,  33, 333,   5,  55, 555,   7,  77, 777],
       [  2,  22, 222,   4,  44, 444,   6,  66, 666,   8,  88, 888]])