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    Pythonlangchain-corerunnablespassthroughRunnableAssign
    Class●Since v0.1

    RunnableAssign

    Runnable that assigns key-value pairs to dict[str, Any] inputs.

    The RunnableAssign class takes input dictionaries and, through a RunnableParallel instance, applies transformations, then combines these with the original data, introducing new key-value pairs based on the mapper's logic.

    Copy
    RunnableAssign(
      self,
      mapper: RunnableParallel[dict[str, Any]],
      **kwargs: Any = {}
    )

    Bases

    RunnableSerializable[dict[str, Any], dict[str, Any]]

    Parameters

    NameTypeDescription
    mapper*RunnableParallel[dict[str, Any]]

    A RunnableParallel instance that will be used to transform the input dictionary.

    Constructors

    constructor
    __init__
    NameType
    mapperRunnableParallel[dict[str, Any]]

    Attributes

    attribute
    mapper: RunnableParallel
    attribute
    config_specs: list[ConfigurableFieldSpec]

    Methods

    method
    is_lc_serializable

    Return True as this class is serializable.

    method
    get_lc_namespace

    Get the namespace of the LangChain object.

    method
    get_name
    method
    get_input_schema
    method
    get_output_schema
    method
    get_graph
    method
    invoke
    method
    ainvoke
    method
    transform
    method
    atransform
    method
    stream
    method
    astream

    Inherited fromRunnableSerializable

    Attributes

    Aname: str
    —

    The name of the function.

    Amodel_config

    Methods

    Mto_json
    —

    Convert the graph to a JSON-serializable format.

    Mconfigurable_fieldsMconfigurable_alternatives
    —

    Configure alternatives for Runnable objects that can be set at runtime.

    Inherited fromSerializable

    Attributes

    Alc_secrets: dict[str, str]
    —

    A map of constructor argument names to secret ids.

    Alc_attributes: dict
    —

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

    Amodel_config

    Methods

    Mlc_id
    —

    Return a unique identifier for this class for serialization purposes.

    Mto_json
    —

    Convert the graph to a JSON-serializable format.

    Mto_json_not_implemented
    —

    Serialize a "not implemented" object.

    Inherited fromRunnable

    Attributes

    Aname: str
    —

    The name of the function.

    AInputType: AnyAOutputType: AnyAinput_schema: type[BaseModel]
    —

    The type of input this Runnable accepts specified as a Pydantic model.

    Aoutput_schema: type[BaseModel]
    —

    Output schema.

    Methods

    Mget_input_jsonschema
    —

    Get a JSON schema that represents the input to the Runnable.

    Mget_output_jsonschema
    —

    Get a JSON schema that represents the output of the Runnable.

    Mconfig_schema
    —

    The type of config this Runnable accepts specified as a Pydantic model.

    Mget_config_jsonschema
    —

    Get a JSON schema that represents the config of the Runnable.

    Mget_prompts
    —

    Return a list of prompts used by this Runnable.

    Mpipe
    —

    Pipe Runnable objects.

    Mpick
    —

    Pick keys from the output dict of this Runnable.

    Massign
    —

    Merge the Dict input with the output produced by the mapping argument.

    MbatchMbatch_as_completed
    —

    Run invoke in parallel on a list of inputs.

    MabatchMabatch_as_completed
    —

    Run ainvoke in parallel on a list of inputs.

    Mastream_log
    —

    Stream all output from a Runnable, as reported to the callback system.

    Mastream_events
    —

    Generate a stream of events.

    Mbind
    —

    Bind arguments to a Runnable, returning a new Runnable.

    Mwith_configMwith_listeners
    —

    Bind lifecycle listeners to a Runnable, returning a new Runnable.

    Mwith_alisteners
    —

    Bind async lifecycle listeners to a Runnable.

    Mwith_types
    —

    Bind input and output types to a Runnable, returning a new Runnable.

    Mwith_retry
    —

    Create a new Runnable that retries the original Runnable on exceptions.

    Mmap
    —

    Map a function to multiple iterables.

    Mwith_fallbacks
    —

    Add fallbacks to a Runnable, returning a new Runnable.

    Mas_tool
    —

    Create a BaseTool from a Runnable.

    View source on GitHub