langchain/tools/python/tool.py/PythonREPLTool/_arun
class PythonREPLTool:    async def _arun(
        self,
        query: str,
        run_manager: Optional[AsyncCallbackManagerForToolRun] = None,
    ) -> Any:
        """Use the tool asynchronously."""
        raise NotImplementedError("PythonReplTool does not support async")