Human 作为工具的集成

pip install -qU  langchain-community

from langchain.agents import create_agent, load_tools
from langchain_openai import ChatOpenAI, OpenAI

llm = ChatOpenAI(temperature=0.0)
math_llm = OpenAI(temperature=0.0)
tools = load_tools(
    ["human", "llm-math"],
    llm=math_llm,
)

agent_chain = create_agent(
    model=llm,
    tools=tools,
    verbose=True,
)

agent_chain.invoke(
    {"input": "What's my friend Eric's surname?"}
)
# Answer with 'Zhu'

> Entering new AgentExecutor chain...
I don't know Eric's surname, so I should ask a human for guidance.
Action: Human
Action Input: "What is Eric's surname?"

What is Eric's surname?

 Zhu

Observation: Zhu
Thought:I now know Eric's surname is Zhu.
Final Answer: Eric's surname is Zhu.

> Finished chain.

"Eric's surname is Zhu."

def get_input() -> str:
    print("Insert your text. Enter 'q' or press Ctrl-D (or Ctrl-Z on Windows) to end.")
    contents = []
    while True:
        try:
            line = input()
        except EOFError:
            break
        if line == "q":
            break
        contents.append(line)
    return "\n".join(contents)


# You can modify the tool when loading
tools = load_tools(["human", "ddg-search"], llm=math_llm, input_func=get_input)

# Or you can directly instantiate the tool
from langchain_community.tools import HumanInputRun

tool = HumanInputRun(input_func=get_input)

agent_chain = create_agent(
    model=llm,
    tools=tools,
    verbose=True,
)

agent_chain.invoke(
    {"input": "I need help attributing a quote"}
)

> Entering new AgentExecutor chain...
I should ask a human for guidance
Action: Human
Action Input: "Can you help me attribute a quote?"

Can you help me attribute a quote?
Insert your text. Enter 'q' or press Ctrl-D (or Ctrl-Z on Windows) to end.

 vini
 vidi
 vici
 q

Observation: vini
vidi
vici
Thought:I need to provide more context about the quote
Action: Human
Action Input: "The quote is 'Veni, vidi, vici'"

The quote is 'Veni, vidi, vici'
Insert your text. Enter 'q' or press Ctrl-D (or Ctrl-Z on Windows) to end.

 oh who said it
 q

Observation: oh who said it
Thought:I can use DuckDuckGo Search to find out who said the quote
Action: DuckDuckGo Search
Action Input: "Who said 'Veni, vidi, vici'?"
Observation: Updated on September 06, 2019. "Veni, vidi, vici" is a famous phrase said to have been spoken by the Roman Emperor Julius Caesar (100-44 BCE) in a bit of stylish bragging that impressed many of the writers of his day and beyond. The phrase means roughly "I came, I saw, I conquered" and it could be pronounced approximately Vehnee, Veedee ... Veni, vidi, vici (Classical Latin: [weːniː wiːdiː wiːkiː], Ecclesiastical Latin: [ˈveni ˈvidi ˈvitʃi]; "I came; I saw; I conquered") is a Latin phrase used to refer to a swift, conclusive victory.The phrase is popularly attributed to Julius Caesar who, according to Appian, used the phrase in a letter to the Roman Senate around 47 BC after he had achieved a quick victory in his short ... veni, vidi, vici Latin quotation from Julius Caesar ve· ni, vi· di, vi· ci ˌwā-nē ˌwē-dē ˈwē-kē ˌvā-nē ˌvē-dē ˈvē-chē : I came, I saw, I conquered Articles Related to veni, vidi, vici 'In Vino Veritas' and Other Latin... Dictionary Entries Near veni, vidi, vici Venite veni, vidi, vici Venizélos See More Nearby Entries Cite this Entry Style The simplest explanation for why veni, vidi, vici is a popular saying is that it comes from Julius Caesar, one of history's most famous figures, and has a simple, strong meaning: I'm powerful and fast. But it's not just the meaning that makes the phrase so powerful. Caesar was a gifted writer, and the phrase makes use of Latin grammar to ... One of the best known and most frequently quoted Latin expression, veni, vidi, vici may be found hundreds of times throughout the centuries used as an expression of triumph. The words are said to have been used by Caesar as he was enjoying a triumph.
Thought:I now know the final answer
Final Answer: Julius Caesar said the quote "Veni, vidi, vici" which means "I came, I saw, I conquered".

> Finished chain.

'Julius Caesar said the quote "Veni, vidi, vici" which means "I came, I saw, I conquered".'