2.2.4.3 recarray：仅仅方便

In [9]:

arr = np.array([('a', 1), ('b', 2)], dtype=[('x', 'S1'), ('y', int)])
arr2 = arr.view(np.recarray)
arr2.x

Out[9]:

chararray(['a', 'b'], 
      dtype='|S1')

In [10]:

arr2.y

Out[10]:

array([1, 2])