import numpy as np
from operator import abs, neg, pos

class MyArr(np.ndarray):
    def __array_ufunc__(self, ufunc, method, *inputs, **kwargs):
        print('calling array_ufunc from %s' % ufunc)
        func = getattr(ufunc, method)
        inp = [i.view(np.ndarray) for i in inputs]
        return func(*inp, **kwargs)

data = np.array([[1, 2, 3], [1, 2, 3]])

arr = data.view(MyArr)

for op in abs, neg, pos:
    print(op(arr))
    print(type(op(arr)))

calling array_ufunc from <ufunc 'absolute'>
[[1 2 3]
 [1 2 3]]
calling array_ufunc from <ufunc 'absolute'>
<class 'numpy.ndarray'>
calling array_ufunc from <ufunc 'negative'>
[[-1 -2 -3]
 [-1 -2 -3]]
calling array_ufunc from <ufunc 'negative'>
<class 'numpy.ndarray'>
[[1 2 3]
 [1 2 3]]
<class '__main__.MyArr'>