T3Variations.variation_shapes
=============================

.. py:method:: t3toolbox.frame_variations_format.T3Variations.variation_shapes()

   .. code-block:: python

      def variation_shapes(
              self,
      ) -> typ.Tuple[
          typ.Tuple[typ.Tuple[int, ...], ...],  # tucker_variation_shapes. len=d. elm_len=2
          typ.Tuple[typ.Tuple[int, ...], ...],  # tt_variation_shapes. len=d. elm_len=3
      ]:


   T3Variations shapes that fit with this T3Frame.

   Shapes of the "holes" in the following tensor diagrams::

       1 -- L0 -- ( ) -- R2 -- R3 -- 1
            |      |      |      |
            U0     U1     U2     U3
            |      |      |      |

       1 -- L0 -- L1 -- O2 -- R3 -- 1
            |     |     |     |
            U0    U1    ( )   U3
            |     |     |     |