Question

How to subtract N from each element in 2D array with Python

Answer 1

import numpy as np 
    
arr = np.array([[1.5, 2, 3.14, 5, 6.9], 
                [0.1, 12, 3.01, 4, 3]])
    
N = 3
arr = arr.__isub__(N)

print(arr)

     
    
'''
run:
  
[[-1.5  -1.    0.14  2.    3.9 ]
 [-2.9   9.    0.01  1.    0.  ]]
    
'''

 

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