on_chat_model_start() — langchain Function Reference

Architecture documentation for the on_chat_model_start() function in test_base.py from the langchain codebase.

Function python LangChainCore LanguageModelBase

Entity Profile

LangChainCore→ LanguageModelBase→ on_chat_model_start() — langchain Function Reference

Dependency Diagram

graph TD
  e1409d29_7e3c_429f_884a_73a1ed40889f["on_chat_model_start()"]
  dc191159_46ce_e73d_e09d_60a920825094["FakeChatModelStartTracer"]
  e1409d29_7e3c_429f_884a_73a1ed40889f -->|defined in| dc191159_46ce_e73d_e09d_60a920825094
  style e1409d29_7e3c_429f_884a_73a1ed40889f fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/tests/unit_tests/language_models/chat_models/test_base.py lines 479–485

    def on_chat_model_start(self, *args: Any, **kwargs: Any) -> Run:
        _, messages = args
        self.messages.append(messages)
        return super().on_chat_model_start(
            *args,
            **kwargs,
        )