[Python] Subtracting 1 from a numpy array gives two different answers

Why are outputs in the two cases different. I am new to this library

Case 1

import numpy as np


np.random.seed(2)

array = np.random.random((3,1))
print('Printing array : \n', array)
print('printing array - 1 : \n',array-1)


Output :
Printing array :
[[0.4359949 ]
[0.02592623]
[0.54966248]]
printing array - 1 :
[[-0.5640051 ]
[-0.97407377]
[-0.45033752]]


This is ok as 1 is subtracted from each element

Case 2

print('Printing array : \n', np.random.random ((3,1))-1)

Output:

Printing array :
[[-0.56467761]
[-0.5796322 ]
[-0.66966518]]


Whay are the two outputs different? np.random.random ((3,1)) should be same in both cases ( same seed) and so subtracting 1 should produce the same output. what am I messing up?

I ran the code as was expecting the same output in both cases

Continue reading...