Numpy数组转置的两种实现方法

np_array = np.array([[1, 2], [3, 4]]) 
np_array.transpose() 
np.transpose(np_array) 

array_1d = np.array([1, 2]) 
print array_1d.shape, array_1d.transpose() 
array_1d.shape = (2, 1) 
print array_1d.shape, array_1d.transpose() 

(2,) [1 2] 
(2, 1) [[1 2]]