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小铭 cf5803e44c Add ToolException that a tool can throw. (#5050) ... # Add ToolException that a tool can throw This is an optional exception that tool throws when execution error occurs. When this exception is thrown, the agent will not stop working,but will handle the exception according to the handle_tool_error variable of the tool,and the processing result will be returned to the agent as observation,and printed in pink on the console.It can be used like this: ```python from langchain.schema import ToolException from langchain import LLMMathChain, SerpAPIWrapper, OpenAI from langchain.agents import AgentType, initialize_agent from langchain.chat_models import ChatOpenAI from langchain.tools import BaseTool, StructuredTool, Tool, tool from langchain.chat_models import ChatOpenAI llm = ChatOpenAI(temperature=0) llm_math_chain = LLMMathChain(llm=llm, verbose=True) class Error_tool: def run(self, s: str): raise ToolException('The current search tool is not available.') def handle_tool_error(error) -> str: return "The following errors occurred during tool execution:"+str(error) search_tool1 = Error_tool() search_tool2 = SerpAPIWrapper() tools = [ Tool.from_function( func=search_tool1.run, name="Search_tool1", description="useful for when you need to answer questions about current events.You should give priority to using it.", handle_tool_error=handle_tool_error, ), Tool.from_function( func=search_tool2.run, name="Search_tool2", description="useful for when you need to answer questions about current events", return_direct=True, ) ] agent = initialize_agent(tools, llm, agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION, verbose=True, handle_tool_errors=handle_tool_error) agent.run("Who is Leo DiCaprio's girlfriend? What is her current age raised to the 0.43 power?") ```  ## Who can review? - @vowelparrot --------- Co-authored-by: Dev 2049 <dev.dev2049@gmail.com>		1 year ago
..
agent_executors/examples	bump version to 173 (#4910)	1 year ago
agents	Remove API key from docs (#5223)	1 year ago
toolkits/examples	Add Multi-CSV/DF support in CSV and DataFrame Toolkits (#5009)	1 year ago
tools	Add ToolException that a tool can throw. (#5050)	1 year ago
agent_executors.rst	big docs refactor (#1978)	1 year ago
agents.rst	agent docs (#2551)	1 year ago
getting_started.ipynb	Docs link custom agent page in getting started (#5250)	1 year ago
how_to_guides.rst	pandas and csv agents (#1353)	2 years ago
plan_and_execute.ipynb	Harrison/spell executor (#4914)	1 year ago
streaming_stdout_final_only.ipynb	Streaming only final output of agent (#2483) (#4630)	1 year ago
toolkits.rst	big docs refactor (#1978)	1 year ago
tools.rst	tool validation logic	1 year ago