add_user_message() — langchain Function Reference

Architecture documentation for the add_user_message() function in chat_history.py from the langchain codebase.

Function python LangChainCore LanguageModelBase calls 1

Entity Profile

LangChainCore→ LanguageModelBase→ add_user_message() — langchain Function Reference

Dependency Diagram

graph TD
  55941dc7_e3fb_54d0_3d5c_5c539d1a4e55["add_user_message()"]
  bafcb99b_bf29_77cc_2ba1_06c40c54e908["BaseChatMessageHistory"]
  55941dc7_e3fb_54d0_3d5c_5c539d1a4e55 -->|defined in| bafcb99b_bf29_77cc_2ba1_06c40c54e908
  499709d0_fa0b_bf8b_19d2_90eb7df3fc33["add_message()"]
  55941dc7_e3fb_54d0_3d5c_5c539d1a4e55 -->|calls| 499709d0_fa0b_bf8b_19d2_90eb7df3fc33
  style 55941dc7_e3fb_54d0_3d5c_5c539d1a4e55 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/chat_history.py lines 112–128

    def add_user_message(self, message: HumanMessage | str) -> None:
        """Convenience method for adding a human message string to the store.

        !!! note

            This is a convenience method. Code should favor the bulk `add_messages`
            interface instead to save on round-trips to the persistence layer.

        This method may be deprecated in a future release.

        Args:
            message: The `HumanMessage` to add to the store.
        """
        if isinstance(message, HumanMessage):
            self.add_message(message)
        else:
            self.add_message(HumanMessage(content=message))