In [1]:

    

import numpy as np


    

In [2]:

    

a = np.arange(6).reshape(2, 3)
print(a)


    

    




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

In [3]:

    

b = np.zeros_like(a)
print(b)


    

    




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

In [4]:

    

print(a)


    

    




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

In [5]:

    

a[:, :] = 0
print(a)


    

    




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

In [6]:

    

a[:] = 1
print(a)


    

    




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

In [7]:

    

a[:] = 0.1
print(a)


    

    




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

In [8]:

    

a = a.astype(np.float)
a[:] = 0.1
print(a)


    

    




[[0.1 0.1 0.1]
 [0.1 0.1 0.1]]