np append row

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Andrés
04 Mar 2018
1import numpy as np    
2arr = np.empty((0,3), int)
3print("Empty array:")
4print(arr)
5arr = np.append(arr, np.array([[10,20,30]]), axis=0)
6arr = np.append(arr, np.array([[40,50,60]]), axis=0)
7print("After adding two new arrays:")
8print(arr)
9
10
Jonathan
03 Apr 2019
1A= [[1, 2, 3], [4, 5, 6]]
2np.append(A, [[7, 8, 9]], axis=0)
3
4    >> array([[1, 2, 3],
5              [4, 5, 6],
6              [7, 8, 9]])
7#or 
8np.r_[A,[[7,8,9]]]
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