np.hstack和np.vstack数据的拼接

将两个数组拼接在一起

import numpy as np
arr1 = np.array([1, 2, 3])
arr2 = np.array([4, 5, 6])
print(np.vstack((arr1, arr2)))#[[1 2 3]
 #                              [4 5 6]]
print(np.hstack((arr1, arr2)))#[1 2 3 4 5 6]