if agent_scratchpad:
            return (
                f"This was your previous work "
                f"(but I haven't seen any of it! I only see what "
                f"you return as final answer):\n{agent_scratchpad}"
            )
        else:
            return agent_scratchpad
    @classmethod
    def _validate_tools(cls, tools: Sequence[BaseTool]) -> None:
        pass
    @classmethod
    def _get_default_output_parser(
        cls, llm: Optional[BaseLanguageModel] = None, **kwargs: Any
    ) -> AgentOutputParser:
        return StructuredChatOutputParserWithRetries.from_llm(llm=llm)
    @property
    def _stop(self) -> List[str]:
        return ["Observation:"]
[docs]    @classmethod
    def create_prompt(
        cls,
        tools: Sequence[BaseTool],
        prefix: str = PREFIX,
        suffix: str = SUFFIX,
        human_message_template: str = HUMAN_MESSAGE_TEMPLATE,
        format_instructions: str = FORMAT_INSTRUCTIONS,
        input_variables: Optional[List[str]] = None,
        memory_prompts: Optional[List[BasePromptTemplate]] = None,
    ) -> BasePromptTemplate:
        tool_strings = []
        for tool in tools:
            args_schema = re.sub("}", "}}}}", re.sub("{", "{{{{", str(tool.args)))
            tool_strings.append(f"{tool.name}: {tool.description}, args: {args_schema}")
        formatted_tools = "\n".join(tool_strings)
        tool_names = ", ".join([tool.name for tool in tools])
        format_instructions = format_instructions.format(tool_names=tool_names)