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    Pythonlangchain-corecallbacksstdoutStdOutCallbackHandler
    Class●Since v0.1

    StdOutCallbackHandler

    Callback handler that prints to std out.

    Copy
    StdOutCallbackHandler(
        self,
        color: str | None = None,
    )

    Bases

    BaseCallbackHandler

    Used in Docs

    • Aim integrations
    • Argilla integration
    • Clearml integrations
    • Comet integrations
    • OpaquePrompts integration

    Parameters

    NameTypeDescription
    colorstr | None
    Default:None

    The color to use for the text.

    Constructors

    constructor
    __init__
    NameType
    colorstr | None

    Attributes

    attribute
    color: color

    Methods

    method
    on_chain_start

    Print out that we are entering a chain.

    method
    on_chain_end

    Print out that we finished a chain.

    method
    on_agent_action

    Run on agent action.

    method
    on_tool_end

    If not the final action, print out observation.

    method
    on_text

    Run when the agent ends.

    method
    on_agent_finish

    Run on the agent end.

    Inherited fromBaseCallbackHandler

    Attributes

    Araise_error: bool
    —

    Whether to raise an error if an exception occurs.

    Arun_inline: boolAignore_llm: bool
    —

    Whether to ignore LLM callbacks.

    Aignore_retry: bool
    —

    Whether to ignore retry callbacks.

    Aignore_chain: bool
    —

    Whether to ignore chain callbacks.

    Aignore_agent: bool
    —

    Whether to ignore agent callbacks.

    Aignore_retriever: bool
    —

    Whether to ignore retriever callbacks.

    Aignore_chat_model: bool
    —

    Whether to ignore chat model callbacks.

    Aignore_custom_event: bool
    —

    Ignore custom event.

    Inherited fromLLMManagerMixin

    Methods

    Mon_llm_new_token
    —

    Run on new output token.

    Mon_llm_end
    —

    End a trace for a model run.

    Mon_llm_error
    —

    Handle an error for an LLM run.

    Inherited fromChainManagerMixin

    Methods

    Mon_chain_error
    —

    Handle an error for a chain run.

    Inherited fromToolManagerMixin

    Methods

    Mon_tool_error
    —

    Run when tool errors.

    Inherited fromRetrieverManagerMixin

    Methods

    Mon_retriever_error
    —

    Run when Retriever errors.

    Mon_retriever_end
    —

    Run when Retriever ends running.

    Inherited fromCallbackManagerMixin

    Methods

    Mon_llm_start
    —

    Start a trace for a (non-chat model) LLM run.

    Mon_chat_model_start
    —

    Start a trace for a chat model run.

    Mon_retriever_start
    —

    Run when Retriever starts running.

    Mon_tool_start
    —

    Start a trace for a tool run.

    Inherited fromRunManagerMixin

    Methods

    Mon_retry
    —

    Run on retry.

    Mon_custom_event
    —

    Generate a custom astream event.

    View source on GitHub