is_basemodel_subclass() — langchain Function Reference

Architecture documentation for the is_basemodel_subclass() function in pydantic.py from the langchain codebase.

Function python Observability TelemetryUtilities calls 1 called by 2

Entity Profile

Observability→ TelemetryUtilities→ is_basemodel_subclass() — langchain Function Reference

Dependency Diagram

graph TD
  9b446982_acc6_4f02_b101_8ca2f3bbb75a["is_basemodel_subclass()"]
  892b1d9f_bb87_0364_19af_71382204e430["pydantic.py"]
  9b446982_acc6_4f02_b101_8ca2f3bbb75a -->|defined in| 892b1d9f_bb87_0364_19af_71382204e430
  0f5a84d8_de71_8584_be44_11eb4638cb79["convert_to_openai_function()"]
  0f5a84d8_de71_8584_be44_11eb4638cb79 -->|calls| 9b446982_acc6_4f02_b101_8ca2f3bbb75a
  9b446982_acc6_4f02_b101_8ca2f3bbb75a["is_basemodel_subclass()"]
  9b446982_acc6_4f02_b101_8ca2f3bbb75a -->|calls| 9b446982_acc6_4f02_b101_8ca2f3bbb75a
  9b446982_acc6_4f02_b101_8ca2f3bbb75a["is_basemodel_subclass()"]
  9b446982_acc6_4f02_b101_8ca2f3bbb75a -->|calls| 9b446982_acc6_4f02_b101_8ca2f3bbb75a
  style 9b446982_acc6_4f02_b101_8ca2f3bbb75a fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/utils/pydantic.py lines 96–111

def is_basemodel_subclass(cls: type) -> bool:
    """Check if the given class is a subclass of Pydantic `BaseModel`.

    Check if the given class is a subclass of any of the following:

    * `pydantic.BaseModel` in Pydantic 2.x
    * `pydantic.v1.BaseModel` in Pydantic 2.x

    Returns:
        `True` if the given class is a subclass of Pydantic `BaseModel`.
    """
    # Before we can use issubclass on the cls we need to check if it is a class
    if not inspect.isclass(cls) or isinstance(cls, GenericAlias):
        return False

    return issubclass(cls, (BaseModel, BaseModelV1))