buffer_as_messages() — langchain Function Reference

Architecture documentation for the buffer_as_messages() function in buffer_window.py from the langchain codebase.

Function python LangChainCore Runnables

Entity Profile

LangChainCore→ Runnables→ buffer_as_messages() — langchain Function Reference

Dependency Diagram

graph TD
  f1dfaa90_5e6d_93cc_0578_ef0cdbbe4b04["buffer_as_messages()"]
  c8a80cfc_d57e_8f95_f465_c5bd71e2a7d4["ConversationBufferWindowMemory"]
  f1dfaa90_5e6d_93cc_0578_ef0cdbbe4b04 -->|defined in| c8a80cfc_d57e_8f95_f465_c5bd71e2a7d4
  style f1dfaa90_5e6d_93cc_0578_ef0cdbbe4b04 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/memory/buffer_window.py lines 47–49

    def buffer_as_messages(self) -> list[BaseMessage]:
        """Exposes the buffer as a list of messages in case return_messages is True."""
        return self.chat_memory.messages[-self.k * 2 :] if self.k > 0 else []