[[1. 1.]
[1. 1.]
[1. 1.]
[1. 1.]]

a = np.ones((2, 4))
b = a.reshape((4, 2))
print(b)

a = np.ones((2, 4))
b = a.reshape((2, 4))
print(b)

a = np.ones((2, 4))
b = a.reshape((8, 1))
print(b)