In [1]:

    

import numpy as np


    

In [9]:

    

X = np.array([[1, 1,1], [2, 2,2], [3,3,3], [4,4,4], [5, 6,7]])

# X_list = [X[:, -1].reshape(-1, 1), X[:, 1].reshape(-1, 1)]


    

In [13]:

    

X[:,:-1], X[:,:-1].shape


    

    
Out[13]:





(array([[1, 1],
        [2, 2],
        [3, 3],
        [4, 4],
        [5, 6]]), (5, 2))

In [14]:

    

X[:,:-1].reshape(-1,1)


    

    
Out[14]:





array([[1],
       [1],
       [2],
       [2],
       [3],
       [3],
       [4],
       [4],
       [5],
       [6]])

In [15]:

    

X[:,0],X[:,0].shape


    

    
Out[15]:





(array([1, 2, 3, 4, 5]), (5,))

In [20]:

    

X[:,0].reshape(-1,1),X[:,0].reshape(-1,1).shape


    

    
Out[20]:





(array([[1],
        [2],
        [3],
        [4],
        [5]]), (5, 1))

In [23]:

    

np.array(1).reshape(1,1)


    

    
Out[23]:





array([[1]])

In [ ]: