code: def evaluate(self):
          
          if not self._is_aligned:
              self.result_type, self.aligned_axes = _align(self.expr.terms)
  
          # make sure no names in resolvers and locals/globals clash
          res = self._evaluate()
          return _reconstruct_object(self.result_type, res, self.aligned_axes,
                                     self.expr.terms.return_type)
docs: Run the engine on the expression
  
          This method performs alignment which is necessary no matter what engine
          is being used, thus its implementation is in the base class.
  
          Returns
          -------
          obj : object
              The result of the passed expression.