import numpy as np a = np.array([[1, 2], [3, 4]]) b = np.array([[5, 6], [7, 8], [9, 10]]) print(np.concatenate((a, b), axis=0)) print(np.concatenate((a, b.T), axis=1)) print(np.concatenate((a, b), axis=None)) 출력 [[1 2] [3 4] [5 6] [7 8] [9 10]] [[1 2 5 6 9] [3 4 6 8 10] [ 1 2 3 4 5 6 7 8 9 10 ]