import numpy as np
a = np.array([1, 2, 3])
b = np.array([4, 5, 6])
c = np.stack((a, b))
print(c) import numpy as np
a = np.array([1, 2, 3])
b = np.array([4, 5, 6])
c = a + b
print(c) import numpy as np
a = np.array([1, 2, 3])
b = np.array([4, 5, 6])
c = np.concatenate((a, b))
print(c)