code: def __getitem__(self, index):
      if index == 0:
          return self.core
      elif index == 1:
          return self.factors
      else:
          raise IndexError(
              f"You tried to access index {index} of a Tucker tensor.\n"
              "You can only access index 0 and 1 of a Tucker tensor"
              "(corresponding respectively to core and factors)"
          )
  
imports: from ._factorized_tensor import FactorizedTensor
  from .base import unfold, tensor_to_vec
  from .tenalg import multi_mode_dot, mode_dot
  from .None import backend
  import numpy
  from scipy.optimize import brentq
  import warnings
label_desc: Use image node_id 2 for calling the TuckerTensor obj's underlying member method code with example usage: obj.__getitem__(index) and returns: self, self