>>> a = np.array([[1,4],[3,1]])>>> np.sort(a)# sort along the last axis
array([[1,4],[1,3]])>>> np.sort(a, axis=None)# sort the flattened array
array([1,1,3,4])>>> np.sort(a, axis=0)# sort along the first axis
array([[1,1],[3,4]])
a = np.array([[1,4],[3,1]])>>> np.sort(a)# sort along the last axis
array([[1,4],[1,3]])>>> np.sort(a, axis=None)# sort the flattened array
array([1,1,3,4])>>> np.sort(a, axis=0)# sort along the first axis
array([[1,1],[3,4]])