tool() — langchain Function Reference

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

Function python LangChainCore Runnables calls 1

Entity Profile

LangChainCore→ Runnables→ tool() — langchain Function Reference

Dependency Diagram

graph TD
  c0ed923d_db1f_e410_fddf_53b30ce91082["tool()"]
  c4e273a8_c1c2_3087_33d7_86e05a21f892["ToolsTests"]
  c0ed923d_db1f_e410_fddf_53b30ce91082 -->|defined in| c4e273a8_c1c2_3087_33d7_86e05a21f892
  f015ba66_2cd9_9ade_91c9_9689d4faf9d7["tool_constructor()"]
  c0ed923d_db1f_e410_fddf_53b30ce91082 -->|calls| f015ba66_2cd9_9ade_91c9_9689d4faf9d7
  style c0ed923d_db1f_e410_fddf_53b30ce91082 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/standard-tests/langchain_tests/unit_tests/tools.py lines 45–55

    def tool(self) -> BaseTool:
        """Tool fixture."""
        if isinstance(self.tool_constructor, BaseTool):
            if self.tool_constructor_params != {}:
                msg = (
                    "If tool_constructor is an instance of BaseTool, "
                    "tool_constructor_params must be empty"
                )
                raise ValueError(msg)
            return self.tool_constructor
        return self.tool_constructor(**self.tool_constructor_params)