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# `langchain.memory.readonly`.ReadOnlySharedMemory

class langchain.memory.readonly.ReadOnlySharedMemory

  Bases: `BaseMemory`

  Memory wrapper that is read-only and cannot be changed.

  Create a new model by parsing and validating input data from keyword arguments.

  Raises ValidationError if the input data cannot be parsed to form a valid model.

  param memory: BaseMemory [Required]
  async aclear() → None

    Clear memory contents.

    Return type

      None

  async aload_memory_variables(inputs: Dict[str, Any]) → Dict[str, Any]

    Return key-value pairs given the text input to the chain.

    Parameters

      inputs (Dict[str, Any]) –

    Return type

      Dict[str, Any]

  async asave_context(inputs: Dict[str, Any], outputs: Dict[str, str]) → None

    Save the context of this chain run to memory.

    Parameters

      - inputs (Dict[str, Any]) –

      - outputs (Dict[str, str]) –

    Return type

      None

  clear() → None

    Nothing to clear, got a memory like a vault.

    Return type

      None

  classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model

    Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values

    Parameters

      - _fields_set (Optional[SetStr]) –

      - values (Any) –

    Return type

      Model

  copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model

    Duplicate a model, optionally choose which fields to include, exclude and change.

    Parameters

      - include (Optional[Union[AbstractSetIntStr, MappingIntStrAny]]) – fields to include in new model

      - exclude (Optional[Union[AbstractSetIntStr, MappingIntStrAny]]) – fields to exclude from new model, as with values this takes precedence over include

      - update (Optional[DictStrAny]) – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data

      - deep (bool) – set to True to make a deep copy of the model

      - self (Model) –

    Returns

      new model instance

    Return type

      Model

  dict(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False) → DictStrAny

    Generate a dictionary representation of the model, optionally specifying which fields to include or exclude.

    Parameters

      - include (Optional[Union[AbstractSetIntStr, MappingIntStrAny]]) –

      - exclude (Optional[Union[AbstractSetIntStr, MappingIntStrAny]]) –

      - by_alias (bool) –

      - skip_defaults (Optional[bool]) –

      - exclude_unset (bool) –

      - exclude_defaults (bool) –

      - exclude_none (bool) –

    Return type

      DictStrAny

  classmethod from_orm(obj: Any) → Model
    Parameters

      obj (Any) –

    Return type

      Model

  classmethod get_lc_namespace() → List[str]

    Get the namespace of the langchain object.

    For example, if the class is langchain.llms.openai.OpenAI, then the namespace is [“langchain”, “llms”, “openai”]

    Return type

      List[str]

  classmethod is_lc_serializable() → bool

    Is this class serializable?

    Return type

      bool

  json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode

    Generate a JSON representation of the model, include and exclude arguments as per dict().

    encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps().

    Parameters

      - include (Optional[Union[AbstractSetIntStr, MappingIntStrAny]]) –

      - exclude (Optional[Union[AbstractSetIntStr, MappingIntStrAny]]) –

      - by_alias (bool) –

      - skip_defaults (Optional[bool]) –

      - exclude_unset (bool) –

      - exclude_defaults (bool) –

      - exclude_none (bool) –

      - encoder (Optional[Callable[[Any], Any]]) –

      - models_as_dict (bool) –

      - dumps_kwargs (Any) –

    Return type

      unicode

  classmethod lc_id() → List[str]

    A unique identifier for this class for serialization purposes.

    The unique identifier is a list of strings that describes the path to the object.

    Return type

      List[str]

  load_memory_variables(inputs: Dict[str, Any]) → Dict[str, str]

    Load memory variables from memory.

    Parameters

      inputs (Dict[str, Any]) –

    Return type

      Dict[str, str]

  classmethod parse_file(path: Union[str, Path], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model
    Parameters

      - path (Union[str, Path]) –

      - content_type (unicode) –

      - encoding (unicode) –

      - proto (Protocol) –

      - allow_pickle (bool) –

    Return type

      Model

  classmethod parse_obj(obj: Any) → Model
    Parameters

      obj (Any) –

    Return type

      Model

  classmethod parse_raw(b: Union[str, bytes], *, content_type: unicode = None, encoding: unicode = 'utf8', proto: Protocol = None, allow_pickle: bool = False) → Model
    Parameters

      - b (Union[str, bytes]) –

      - content_type (unicode) –

      - encoding (unicode) –

      - proto (Protocol) –

      - allow_pickle (bool) –

    Return type

      Model

  save_context(inputs: Dict[str, Any], outputs: Dict[str, str]) → None

    Nothing should be saved or changed

    Parameters

      - inputs (Dict[str, Any]) –

      - outputs (Dict[str, str]) –

    Return type

      None

  classmethod schema(by_alias: bool = True, ref_template: unicode = '#/definitions/{model}') → DictStrAny
    Parameters

      - by_alias (bool) –

      - ref_template (unicode) –

    Return type

      DictStrAny

  classmethod schema_json(*, by_alias: bool = True, ref_template: unicode = '#/definitions/{model}', **dumps_kwargs: Any) → unicode
    Parameters

      - by_alias (bool) –

      - ref_template (unicode) –

      - dumps_kwargs (Any) –

    Return type

      unicode

  to_json() → Union[SerializedConstructor, SerializedNotImplemented]
    Return type

      Union[SerializedConstructor, SerializedNotImplemented]

  to_json_not_implemented() → SerializedNotImplemented
    Return type

      SerializedNotImplemented

  classmethod update_forward_refs(**localns: Any) → None

    Try to update ForwardRefs on fields based on this Model, globalns and localns.

    Parameters

      localns (Any) –

    Return type

      None

  classmethod validate(value: Any) → Model
    Parameters

      value (Any) –

    Return type

      Model

  property lc_attributes: Dict

    List of attribute names that should be included in the serialized kwargs.

    These attributes must be accepted by the constructor.

  property lc_secrets: Dict[str, str]

    A map of constructor argument names to secret ids.

    For example,

      {“openai_api_key”: “OPENAI_API_KEY”}

  property memory_variables: List[str]

    Return memory variables.

# Examples using ReadOnlySharedMemory

- Adapted code from /docs/modules/agents/how_to/sharedmemory_for_tools