unpack_vectors
==============

.. py:function:: t3toolbox.backend.ut3_operations.unpack_vectors(packed_vectors, unpacking_shape)

   .. code-block:: python

      def unpack_vectors(
              packed_vectors:  NDArray,            # shape=(d,)+stack_shape+(N,)
              unpacking_shape: typ.Sequence[int],  # (N0,...,N(d-1))
      ) -> typ.Tuple[NDArray, ...]:                # len=d, ith elm_shape=stack_shape+(Ni,)


   Slice a packed supercore-shaped tensor back into a tuple of (ragged-length) vectors.