code: def boost_object(self, obj_id=None, obj_type=None, multiplier=1.1,
                       relative=True):
          
          combined_id = self.object_key(obj_id or '', obj_type or '')
          if relative:
              current = float(self._boosts[combined_id] or 1.0)
              self._boosts[combined_id] = current * multiplier
          else:
              self._boosts[combined_id] = multiplier
docs: Boost search results for the given object or type by the
          amount specified. When the ``multiplier`` is greater than
          1, the results will percolate to the top. Values between
          0 and 1 will percolate results to the bottom.
  
          Either an ``obj_id`` or ``obj_type`` (or both) must be
          specified.
  
          :param obj_id: An object's unique identifier (optional).
          :param obj_type: The object's type (optional).
          :param multiplier: A positive floating-point number.
          :param relative: If ``True``, then any pre-existing saved
              boost will be updated using the given multiplier.
  
          Examples:
  
          .. code-block:: python
  
              # Make all objects of type=photos percolate to top.
              ac.boost_object(obj_type='photo', multiplier=2.0)
  
              # Boost a particularly popular blog entry.
              ac.boost_object(
                  popular_entry.id,
                  'entry',
                  multipler=5.0,
                  relative=False)