In [1]:

    

import numpy as np


    

In [2]:

    

a = np.zeros((3, 3), np.int)
print(a)


    

    




[[0 0 0]
 [0 0 0]
 [0 0 0]]

In [3]:

    

print(a.shape)


    

    




(3, 3)

In [4]:

    

b = np.arange(3)
print(b)


    

    




[0 1 2]

In [5]:

    

print(b.shape)


    

    




(3,)

In [6]:

    

print(a + b)


    

    




[[0 1 2]
 [0 1 2]
 [0 1 2]]

In [7]:

    

b_1_3 = b.reshape(1, 3)
print(b_1_3)


    

    




[[0 1 2]]

In [8]:

    

print(b_1_3.shape)


    

    




(1, 3)

In [9]:

    

print(np.tile(b_1_3, (3, 1)))


    

    




[[0 1 2]
 [0 1 2]
 [0 1 2]]

In [10]:

    

b_3_1 = b.reshape(3, 1)
print(b_3_1)


    

    




[[0]
 [1]
 [2]]

In [11]:

    

print(b_3_1.shape)


    

    




(3, 1)

In [12]:

    

print(a + b_3_1)


    

    




[[0 0 0]
 [1 1 1]
 [2 2 2]]

In [13]:

    

print(np.tile(b_3_1, (1, 3)))


    

    




[[0 0 0]
 [1 1 1]
 [2 2 2]]

In [14]:

    

print(b_1_3)


    

    




[[0 1 2]]

In [15]:

    

print(b_1_3.shape)


    

    




(1, 3)

In [16]:

    

print(b_3_1)


    

    




[[0]
 [1]
 [2]]

In [17]:

    

print(b_3_1.shape)


    

    




(3, 1)

In [18]:

    

print(b_1_3 + b_3_1)


    

    




[[0 1 2]
 [1 2 3]
 [2 3 4]]

In [19]:

    

print(np.tile(b_1_3, (3, 1)))


    

    




[[0 1 2]
 [0 1 2]
 [0 1 2]]

In [20]:

    

print(np.tile(b_3_1, (1, 3)))


    

    




[[0 0 0]
 [1 1 1]
 [2 2 2]]

In [21]:

    

print(np.tile(b_1_3, (3, 1)) + np.tile(b_3_1, (1, 3)))


    

    




[[0 1 2]
 [1 2 3]
 [2 3 4]]

In [22]:

    

c = np.arange(4)
print(c)


    

    




[0 1 2 3]

In [23]:

    

print(c.shape)


    

    




(4,)

In [24]:

    

print(b_3_1)


    

    




[[0]
 [1]
 [2]]

In [25]:

    

print(b_3_1.shape)


    

    




(3, 1)

In [26]:

    

print(c + b_3_1)


    

    




[[0 1 2 3]
 [1 2 3 4]
 [2 3 4 5]]

In [27]:

    

print(np.tile(c.reshape(1, 4), (3, 1)))


    

    




[[0 1 2 3]
 [0 1 2 3]
 [0 1 2 3]]

In [28]:

    

print(np.tile(b_3_1, (1, 4)))


    

    




[[0 0 0 0]
 [1 1 1 1]
 [2 2 2 2]]

In [29]:

    

print(np.tile(c.reshape(1, 4), (3, 1)) + np.tile(b_3_1, (1, 4)))


    

    




[[0 1 2 3]
 [1 2 3 4]
 [2 3 4 5]]