add() — langchain Function Reference

Architecture documentation for the __add__() function in tool.py from the langchain codebase.

Function python LangChainCore ApiManagement calls 1

Entity Profile

LangChainCore→ ApiManagement→ __add__() — langchain Function Reference

Dependency Diagram

graph TD
  d9ce065e_81b3_cfb3_689b_ec7c267f9c54["__add__()"]
  b948836a_8972_401c_7898_c83f3d6bf485["ToolMessageChunk"]
  d9ce065e_81b3_cfb3_689b_ec7c267f9c54 -->|defined in| b948836a_8972_401c_7898_c83f3d6bf485
  a8e116d1_b854_7d71_8ff6_e9ffa7f10e75["_merge_status()"]
  d9ce065e_81b3_cfb3_689b_ec7c267f9c54 -->|calls| a8e116d1_b854_7d71_8ff6_e9ffa7f10e75
  style d9ce065e_81b3_cfb3_689b_ec7c267f9c54 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/messages/tool.py lines 183–203

    def __add__(self, other: Any) -> BaseMessageChunk:  # type: ignore[override]
        if isinstance(other, ToolMessageChunk):
            if self.tool_call_id != other.tool_call_id:
                msg = "Cannot concatenate ToolMessageChunks with different names."
                raise ValueError(msg)

            return self.__class__(
                tool_call_id=self.tool_call_id,
                content=merge_content(self.content, other.content),
                artifact=merge_obj(self.artifact, other.artifact),
                additional_kwargs=merge_dicts(
                    self.additional_kwargs, other.additional_kwargs
                ),
                response_metadata=merge_dicts(
                    self.response_metadata, other.response_metadata
                ),
                id=self.id,
                status=_merge_status(self.status, other.status),
            )

        return super().__add__(other)