如何在numpy中组合数组？

import numpy as np

a = np.array([[1, 2], [3, 4]])
b = np.array([[5, 6]])

result = np.concatenate((a, b), axis=0)
print(result)

[[1 2]
 [3 4]
 [5 6]]

import numpy as np

a = np.array([1, 2, 3])
b = np.array([4, 5, 6])

result = np.stack((a, b), axis=1)
print(result)

[[1 4]
 [2 5]
 [3 6]]

import numpy as np

a = np.array([1, 2, 3])
b = np.array([4, 5, 6])

result = np.vstack((a, b))
print(result)

[[1 2 3]
 [4 5 6]]

import numpy as np

a = np.array([1, 2, 3])
b = np.array([4, 5, 6])

result = np.column_stack((a, b))
print(result)

[[1 4]
 [2 5]
 [3 6]]