如何将一列整数附加到numpy中的浮点数的2D矩阵？

import numpy as np

float_matrix = np.array([[1.0, 2.0, 3.0],
                         [4.0, 5.0, 6.0]])

integer_array = np.array([7, 8])

result = np.hstack((float_matrix, integer_array.reshape(-1, 1)))

print(result)

import numpy as np

float_matrix = np.array([[1.0, 2.0, 3.0],
                         [4.0, 5.0, 6.0]])

integer_array = np.array([7, 8])

result = np.hstack((float_matrix, integer_array.reshape(-1, 1)))

print(result)

[[1. 2. 3. 7.]
 [4. 5. 6. 8.]]