How do I unpack a numpy array of tuples into an ndarray?

Question

I have a 2D numpy array with elements of the type np.void that are essentially tuples. Is there an efficient way to unpack the values in these tuples to a 3rd dime

Answer 1

You can view as a standard numpy array to allow for the indexing you're after.

b = a.view('(3,)

array([[[1, 2, 3],
        [1, 2, 3],
        [1, 2, 3]],

       [[1, 2, 3],
        [1, 2, 3],
        [1, 2, 3]],

       [[1, 2, 3],
        [1, 2, 3],
        [1, 2, 3]]], dtype=uint16)

---

>>> b.shape
(3, 3, 3)
>>> b[:, :, 0]
array([[1, 1, 1],
       [1, 1, 1],
       [1, 1, 1]], dtype=uint16)