buffer_as_str() — langchain Function Reference

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

Function python LangChainCore ApiManagement

Entity Profile

LangChainCore→ ApiManagement→ buffer_as_str() — langchain Function Reference

Dependency Diagram

graph TD
  4fb98dac_c79b_c7d5_66e3_7fd248255c6f["buffer_as_str()"]
  c8a80cfc_d57e_8f95_f465_c5bd71e2a7d4["ConversationBufferWindowMemory"]
  4fb98dac_c79b_c7d5_66e3_7fd248255c6f -->|defined in| c8a80cfc_d57e_8f95_f465_c5bd71e2a7d4
  style 4fb98dac_c79b_c7d5_66e3_7fd248255c6f fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/memory/buffer_window.py lines 37–44

    def buffer_as_str(self) -> str:
        """Exposes the buffer as a string in case return_messages is False."""
        messages = self.chat_memory.messages[-self.k * 2 :] if self.k > 0 else []
        return get_buffer_string(
            messages,
            human_prefix=self.human_prefix,
            ai_prefix=self.ai_prefix,
        )