_get_language_model() — langchain Function Reference

Architecture documentation for the _get_language_model() function in llm.py from the langchain codebase.

Function python AgentOrchestration ClassicChains called by 1

Entity Profile

AgentOrchestration→ ClassicChains→ _get_language_model() — langchain Function Reference

Dependency Diagram

graph TD
  9a7ccbec_e694_f5c0_2666_7f5d643bfc95["_get_language_model()"]
  0cb3a171_64ff_944b_88ef_4b11fdfc752a["llm.py"]
  9a7ccbec_e694_f5c0_2666_7f5d643bfc95 -->|defined in| 0cb3a171_64ff_944b_88ef_4b11fdfc752a
  4155f1bf_c631_de03_a6ec_dd7c9f4e31d1["_get_num_tokens()"]
  4155f1bf_c631_de03_a6ec_dd7c9f4e31d1 -->|calls| 9a7ccbec_e694_f5c0_2666_7f5d643bfc95
  style 9a7ccbec_e694_f5c0_2666_7f5d643bfc95 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/langchain/langchain_classic/chains/llm.py lines 419–432

def _get_language_model(llm_like: Runnable) -> BaseLanguageModel:
    if isinstance(llm_like, BaseLanguageModel):
        return llm_like
    if isinstance(llm_like, RunnableBinding):
        return _get_language_model(llm_like.bound)
    if isinstance(llm_like, RunnableWithFallbacks):
        return _get_language_model(llm_like.runnable)
    if isinstance(llm_like, (RunnableBranch, DynamicRunnable)):
        return _get_language_model(llm_like.default)
    msg = (
        f"Unable to extract BaseLanguageModel from llm_like object of type "
        f"{type(llm_like)}"
    )
    raise ValueError(msg)