langchain.agents.self_ask_with_search.base.create_self_ask_with_search_agent¶
- langchain.agents.self_ask_with_search.base.create_self_ask_with_search_agent(llm: BaseLanguageModel, tools: Sequence[BaseTool], prompt: BasePromptTemplate) Runnable[source]¶
Create an agent that uses self-ask with search prompting.
- Parameters
llm (BaseLanguageModel) – LLM to use as the agent.
tools (Sequence[BaseTool]) – List of tools. Should just be of length 1, with that tool having name Intermediate Answer
prompt (BasePromptTemplate) – The prompt to use, must have input key agent_scratchpad which will contain agent actions and tool outputs.
- Returns
A Runnable sequence representing an agent. It takes as input all the same input variables as the prompt passed in does. It returns as output either an AgentAction or AgentFinish.
- Return type
Examples
from langchain import hub from langchain_community.chat_models import ChatAnthropic from langchain.agents import ( AgentExecutor, create_self_ask_with_search_agent ) prompt = hub.pull("hwchase17/self-ask-with-search") model = ChatAnthropic() tools = [...] # Should just be one tool with name `Intermediate Answer` agent = create_self_ask_with_search_agent(model, tools, prompt) agent_executor = AgentExecutor(agent=agent, tools=tools) agent_executor.invoke({"input": "hi"})
Prompt:
- The prompt must have input key agent_scratchpad which will
contain agent actions and tool outputs as a string.
Here’s an example:
from langchain_core.prompts import PromptTemplate template = '''Question: Who lived longer, Muhammad Ali or Alan Turing? Are follow up questions needed here: Yes. Follow up: How old was Muhammad Ali when he died? Intermediate answer: Muhammad Ali was 74 years old when he died. Follow up: How old was Alan Turing when he died? Intermediate answer: Alan Turing was 41 years old when he died. So the final answer is: Muhammad Ali Question: When was the founder of craigslist born? Are follow up questions needed here: Yes. Follow up: Who was the founder of craigslist? Intermediate answer: Craigslist was founded by Craig Newmark. Follow up: When was Craig Newmark born? Intermediate answer: Craig Newmark was born on December 6, 1952. So the final answer is: December 6, 1952 Question: Who was the maternal grandfather of George Washington? Are follow up questions needed here: Yes. Follow up: Who was the mother of George Washington? Intermediate answer: The mother of George Washington was Mary Ball Washington. Follow up: Who was the father of Mary Ball Washington? Intermediate answer: The father of Mary Ball Washington was Joseph Ball. So the final answer is: Joseph Ball Question: Are both the directors of Jaws and Casino Royale from the same country? Are follow up questions needed here: Yes. Follow up: Who is the director of Jaws? Intermediate answer: The director of Jaws is Steven Spielberg. Follow up: Where is Steven Spielberg from? Intermediate answer: The United States. Follow up: Who is the director of Casino Royale? Intermediate answer: The director of Casino Royale is Martin Campbell. Follow up: Where is Martin Campbell from? Intermediate answer: New Zealand. So the final answer is: No Question: {input} Are followup questions needed here:{agent_scratchpad}''' prompt = PromptTemplate.from_template(template)