Class HumanMessage

libs/core/langchain_core/messages/human.py:6–48

Message from a human. HumanMessages are messages that are passed in from a human to the model. Example: .. code-block:: python from langchain_core.messages import HumanMessage, SystemMessage messages = [ SystemMessage(

class HumanMessage(BaseMessage):
    """Message from a human.

    HumanMessages are messages that are passed in from a human to the model.

    Example:

        .. code-block:: python

            from langchain_core.messages import HumanMessage, SystemMessage

            messages = [
                SystemMessage(
                    content="You are a helpful assistant! Your name is Bob."
                ),
                HumanMessage(
                    content="What is your name?"
                )
            ]

            # Instantiate a chat model and invoke it with the messages
            model = ...
            print(model.invoke(messages))
    """

    example: bool = False
    """Use to denote that a message is part of an example conversation.
    
    At the moment, this is ignored by most models. Usage is discouraged.
    """

    type: Literal["human"] = "human"

    @classmethod
    def get_lc_namespace(cls) -> List[str]:
        """Get the namespace of the langchain object."""
        return ["langchain", "schema", "messages"]

    def __init__(
        self, content: Union[str, List[Union[str, Dict]]], **kwargs: Any
    ) -> None:
        """Pass in content as positional arg."""
        super().__init__(content=content, **kwargs)


HumanMessage.update_forward_refs()