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In [1]:

    
import numpy as np



In [2]:

    
a1 = np.ones((2, 3), int)
print(a1)









    



[[1 1 1]
 [1 1 1]]



In [3]:

    
a2 = np.full((2, 3), 2)
print(a2)









    



[[2 2 2]
 [2 2 2]]



In [4]:

    
print(np.vstack([a1, a2]))









    



[[1 1 1]
 [1 1 1]
 [2 2 2]
 [2 2 2]]



In [5]:

    
print(np.concatenate([a1, a2], 0))









    



[[1 1 1]
 [1 1 1]
 [2 2 2]
 [2 2 2]]



In [6]:

    
a1 = np.ones(3, int)
print(a1)



In [7]:

    
a2 = np.full(3, 2)
print(a2)



In [8]:

    
print(np.vstack([a1, a2]))









    



[[1 1 1]
 [2 2 2]]



In [9]:

    
print(np.stack([a1, a2], 0))









    



[[1 1 1]
 [2 2 2]]



In [10]:

    
a1 = np.ones((2, 3), int)
print(a1)









    



[[1 1 1]
 [1 1 1]]



In [11]:

    
a2 = np.full(3, 2)
print(a2)



In [12]:

    
print(np.vstack([a1, a2]))









    



[[1 1 1]
 [1 1 1]
 [2 2 2]]