ExceptionTool Class — langchain Architecture

Architecture documentation for the ExceptionTool class in agent.py from the langchain codebase.

Class python

Entity Profile

Dependency Diagram

graph TD
  c352750f_06b7_5fd4_1121_2c280ee6834a["ExceptionTool"]
  5ebe56ae_0ac8_cb13_b5a9_ee567b924009["BaseTool"]
  c352750f_06b7_5fd4_1121_2c280ee6834a -->|extends| 5ebe56ae_0ac8_cb13_b5a9_ee567b924009
  0faae8c7_2812_be15_1073_b6537539cea8["agent.py"]
  c352750f_06b7_5fd4_1121_2c280ee6834a -->|defined in| 0faae8c7_2812_be15_1073_b6537539cea8
  2b57dc3b_923d_2f26_48ec_9f440b4a0015["_run()"]
  c352750f_06b7_5fd4_1121_2c280ee6834a -->|method| 2b57dc3b_923d_2f26_48ec_9f440b4a0015
  716558a9_cfe3_364e_dfa1_cdd9141f3fe8["_arun()"]
  c352750f_06b7_5fd4_1121_2c280ee6834a -->|method| 716558a9_cfe3_364e_dfa1_cdd9141f3fe8

Relationship Graph

Source Code

libs/langchain/langchain_classic/agents/agent.py lines 983–1005

class ExceptionTool(BaseTool):
    """Tool that just returns the query."""

    name: str = "_Exception"
    """Name of the tool."""
    description: str = "Exception tool"
    """Description of the tool."""

    @override
    def _run(
        self,
        query: str,
        run_manager: CallbackManagerForToolRun | None = None,
    ) -> str:
        return query

    @override
    async def _arun(
        self,
        query: str,
        run_manager: AsyncCallbackManagerForToolRun | None = None,
    ) -> str:
        return query