_get_type_hints() — langchain Function Reference

Architecture documentation for the _get_type_hints() function in base.py from the langchain codebase.

Function python AgentOrchestration ToolInterface called by 1

Entity Profile

AgentOrchestration→ ToolInterface→ _get_type_hints() — langchain Function Reference

Dependency Diagram

graph TD
  2aad783a_8a4d_7d3b_f0ea_8a31b559d717["_get_type_hints()"]
  80cebff4_efbd_4311_85e9_de0dc81a7eee["base.py"]
  2aad783a_8a4d_7d3b_f0ea_8a31b559d717 -->|defined in| 80cebff4_efbd_4311_85e9_de0dc81a7eee
  0ebf9c8b_48e0_ffff_f656_8876be0326eb["_get_runnable_config_param()"]
  0ebf9c8b_48e0_ffff_f656_8876be0326eb -->|calls| 2aad783a_8a4d_7d3b_f0ea_8a31b559d717
  style 2aad783a_8a4d_7d3b_f0ea_8a31b559d717 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/tools/base.py lines 1331–1345

def _get_type_hints(func: Callable) -> dict[str, type] | None:
    """Get type hints from a function, handling partial functions.

    Args:
        func: The function to get type hints from.

    Returns:
        `dict` of type hints, or `None` if extraction fails.
    """
    if isinstance(func, functools.partial):
        func = func.func
    try:
        return get_type_hints(func)
    except Exception:
        return None