Question

How to reverse numpy 2D array (matrix) rows in Python

Answer 1

import numpy as np

arr = np.array([[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]])
arr = np.flip(arr, axis=0)

print(arr)
                  
                  

'''
run:

[[ 9 10 11 12]
 [ 5  6  7  8]
 [ 1  2  3  4]]

'''

 

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