call() — langchain Function Reference

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

Function python LangChainCore LanguageModelBase calls 1

Entity Profile

LangChainCore→ LanguageModelBase→ __call__() — langchain Function Reference

Dependency Diagram

graph TD
  3e884c1e_b5b9_62f5_9953_83e5f43a0de9["__call__()"]
  878fd31a_61cf_3199_2764_5308cc207a9b["TextAccessor"]
  3e884c1e_b5b9_62f5_9953_83e5f43a0de9 -->|defined in| 878fd31a_61cf_3199_2764_5308cc207a9b
  100b1f91_cae4_8f2d_9794_0b9d1badef48["text()"]
  3e884c1e_b5b9_62f5_9953_83e5f43a0de9 -->|calls| 100b1f91_cae4_8f2d_9794_0b9d1badef48
  style 3e884c1e_b5b9_62f5_9953_83e5f43a0de9 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/messages/base.py lines 68–90

    def __call__(self) -> str:
        """Enable method-style text access for backward compatibility.

        This method exists solely to support legacy code that calls `.text()`
        as a method. New code should use property access (`.text`) instead.

        !!! deprecated
            As of `langchain-core` 1.0.0, calling `.text()` as a method is deprecated.
            Use `.text` as a property instead. This method will be removed in 2.0.0.

        Returns:
            The string content, identical to property access.

        """
        warn_deprecated(
            since="1.0.0",
            message=(
                "Calling .text() as a method is deprecated. "
                "Use .text as a property instead (e.g., message.text)."
            ),
            removal="2.0.0",
        )
        return str(self)