code: def remove_incompatible_items(first_dict: MutableMapping[K, V],
                                second_dict: Mapping[K, V],
                                compat: Callable[[V, V], bool] = equivalent
                                ) -> None:
      
      for k in list(first_dict):
          if k not in second_dict or not compat(first_dict[k], second_dict[k]):
              del first_dict[k]
docs: Remove incompatible items from the first dictionary in-place.
  
      Items are retained if their keys are found in both dictionaries and the
      values are compatible.
  
      Parameters
      ----------
      first_dict, second_dict : dict-like
          Mappings to merge.
      compat : function, optional
          Binary operator to determine if two values are compatible. By default,
          checks for equivalence.