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无需观察的推理

在 ReWOO 中，Xu 等人提出了一种结合多步规划器和变量替换以有效使用工具的 Agent。它旨在通过以下方式改进 ReACT 风格的 Agent 架构：

  1. 通过单次生成完整的工具使用链，减少 token 消耗和执行时间。（ReACT 风格的 Agent 架构需要多次调用 LLM，每次都带有冗余前缀（因为在每个推理步骤中都会向 LLM 提供系统提示和之前的步骤））
  2. 简化微调过程。由于规划数据不依赖于工具的输出，因此可以在不实际调用工具的情况下对模型进行微调（理论上）。

下图概述了 ReWOO 的整体计算图

ReWoo Diagram

ReWOO 由 3 个模块组成

  1. 🧠规划器：按以下格式生成计划
    Plan: <reasoning>
#E1 = Tool[argument for tool]
Plan: <reasoning>
#E2 = Tool[argument for tool with #E1 variable substitution]
...
  2. 工作器：使用提供的参数执行工具。
  3. 🧠解答器：根据工具观察结果生成初始任务的答案。

带有 🧠 表情符号的模块依赖于 LLM 调用。请注意，我们通过使用变量替换避免了对规划器 LLM 的冗余调用。

在此示例中，每个模块由一个 LangGraph 节点表示。最终结果将留下一个 这样的跟踪。让我们开始吧！

设置

在此示例中，我们将为 Agent 提供一个 Tavily 搜索引擎工具。您可以在此处获取 API 密钥，或者替换为免费工具选项（例如，DuckDuckGo 搜索）。

让我们安装所需的软件包并设置 API 密钥

pip install -U langgraph langchain_community langchain_openai tavily-python

import getpass
import os


def _set_if_undefined(var: str):
    if not os.environ.get(var):
        os.environ[var] = getpass.getpass(f"{var}=")


_set_if_undefined("TAVILY_API_KEY")
_set_if_undefined("OPENAI_API_KEY")

设置 LangSmith 以进行 LangGraph 开发

注册 LangSmith 可以快速发现问题并提高您的 LangGraph 项目的性能。LangSmith 允许您使用跟踪数据来调试、测试和监控使用 LangGraph 构建的 LLM 应用 — 在此处阅读更多关于如何入门的信息。

定义图状态

在 LangGraph 中，每个节点都会更新一个共享的图状态。每当调用节点时，该状态就是节点的输入。

下面，我们将定义一个状态字典来包含任务、计划、步骤和其他变量。

from typing import List
from typing_extensions import TypedDict


class ReWOO(TypedDict):
    task: str
    plan_string: str
    steps: List
    results: dict
    result: str

规划器

规划器会提示 LLM 生成任务列表形式的计划。每个任务的参数是字符串，可能包含用于从其他任务结果进行变量替换的特殊变量（#E{0-9}+）。

ReWOO workflow

我们的示例 Agent 将有两个工具：1. Google - 一个搜索引擎（在此示例中是 Tavily）2. LLM - 一个用于对之前输出进行推理的 LLM 调用。

LLM 工具接收的提示上下文较少，因此比 ReACT 范式更具 token 效率。

API 参考：ChatOpenAI

from langchain_openai import ChatOpenAI

model = ChatOpenAI(model="gpt-4o")

prompt = """For the following task, make plans that can solve the problem step by step. For each plan, indicate \
which external tool together with tool input to retrieve evidence. You can store the evidence into a \
variable #E that can be called by later tools. (Plan, #E1, Plan, #E2, Plan, ...)

Tools can be one of the following:
(1) Google[input]: Worker that searches results from Google. Useful when you need to find short
and succinct answers about a specific topic. The input should be a search query.
(2) LLM[input]: A pretrained LLM like yourself. Useful when you need to act with general
world knowledge and common sense. Prioritize it when you are confident in solving the problem
yourself. Input can be any instruction.

For example,
Task: Thomas, Toby, and Rebecca worked a total of 157 hours in one week. Thomas worked x
hours. Toby worked 10 hours less than twice what Thomas worked, and Rebecca worked 8 hours
less than Toby. How many hours did Rebecca work?
Plan: Given Thomas worked x hours, translate the problem into algebraic expressions and solve
with Wolfram Alpha. #E1 = WolframAlpha[Solve x + (2x − 10) + ((2x − 10) − 8) = 157]
Plan: Find out the number of hours Thomas worked. #E2 = LLM[What is x, given #E1]
Plan: Calculate the number of hours Rebecca worked. #E3 = Calculator[(2 ∗ #E2 − 10) − 8]

Begin! 
Describe your plans with rich details. Each Plan should be followed by only one #E.

Task: {task}"""

task = "what is the exact hometown of the 2024 mens australian open winner"

result = model.invoke(prompt.format(task=task))


print(result.content)

Plan: Use Google to search for the 2024 Australian Open winner.
#E1 = Google[2024 Australian Open winner]

Plan: Retrieve the name of the 2024 Australian Open winner from the search results.
#E2 = LLM[What is the name of the 2024 Australian Open winner, given #E1]

Plan: Use Google to search for the hometown of the 2024 Australian Open winner.
#E3 = Google[hometown of 2024 Australian Open winner, given #E2]

Plan: Retrieve the hometown of the 2024 Australian Open winner from the search results.
#E4 = LLM[What is the hometown of the 2024 Australian Open winner, given #E3]

规划器节点

为了将规划器连接到我们的图中，我们将创建一个 get_plan 节点，该节点接受 ReWOO 状态并返回更新了 steps 和 plan_string 字段的状态。

API 参考：ChatPromptTemplate

import re

from langchain_core.prompts import ChatPromptTemplate

# Regex to match expressions of the form E#... = ...[...]
regex_pattern = r"Plan:\s*(.+)\s*(#E\d+)\s*=\s*(\w+)\s*\[([^\]]+)\]"
prompt_template = ChatPromptTemplate.from_messages([("user", prompt)])
planner = prompt_template | model


def get_plan(state: ReWOO):
    task = state["task"]
    result = planner.invoke({"task": task})
    # Find all matches in the sample text
    matches = re.findall(regex_pattern, result.content)
    return {"steps": matches, "plan_string": result.content}

执行器

执行器接收计划并按顺序执行工具。

下面，实例化搜索引擎并定义工具执行节点。

API 参考：TavilySearchResults

from langchain_community.tools.tavily_search import TavilySearchResults

search = TavilySearchResults()

def _get_current_task(state: ReWOO):
    if "results" not in state or state["results"] is None:
        return 1
    if len(state["results"]) == len(state["steps"]):
        return None
    else:
        return len(state["results"]) + 1


def tool_execution(state: ReWOO):
    """Worker node that executes the tools of a given plan."""
    _step = _get_current_task(state)
    _, step_name, tool, tool_input = state["steps"][_step - 1]
    _results = (state["results"] or {}) if "results" in state else {}
    for k, v in _results.items():
        tool_input = tool_input.replace(k, v)
    if tool == "Google":
        result = search.invoke(tool_input)
    elif tool == "LLM":
        result = model.invoke(tool_input)
    else:
        raise ValueError
    _results[step_name] = str(result)
    return {"results": _results}

解答器

解答器接收完整的计划，并根据工作器（Worker）执行工具调用的响应生成最终答案。

solve_prompt = """Solve the following task or problem. To solve the problem, we have made step-by-step Plan and \
retrieved corresponding Evidence to each Plan. Use them with caution since long evidence might \
contain irrelevant information.

{plan}

Now solve the question or task according to provided Evidence above. Respond with the answer
directly with no extra words.

Task: {task}
Response:"""


def solve(state: ReWOO):
    plan = ""
    for _plan, step_name, tool, tool_input in state["steps"]:
        _results = (state["results"] or {}) if "results" in state else {}
        for k, v in _results.items():
            tool_input = tool_input.replace(k, v)
            step_name = step_name.replace(k, v)
        plan += f"Plan: {_plan}\n{step_name} = {tool}[{tool_input}]"
    prompt = solve_prompt.format(plan=plan, task=state["task"])
    result = model.invoke(prompt)
    return {"result": result.content}

定义图

我们的图定义了工作流。规划器、工具执行器和解答器模块都作为节点添加。

def _route(state):
    _step = _get_current_task(state)
    if _step is None:
        # We have executed all tasks
        return "solve"
    else:
        # We are still executing tasks, loop back to the "tool" node
        return "tool"

API 参考：END | StateGraph | START

from langgraph.graph import END, StateGraph, START

graph = StateGraph(ReWOO)
graph.add_node("plan", get_plan)
graph.add_node("tool", tool_execution)
graph.add_node("solve", solve)
graph.add_edge("plan", "tool")
graph.add_edge("solve", END)
graph.add_conditional_edges("tool", _route)
graph.add_edge(START, "plan")

app = graph.compile()


for s in app.stream({"task": task}):
    print(s)
    print("---")

{'plan': {'plan_string': "Plan: Use Google to search for the 2024 Men's Australian Open winner. #E1 = Google[2024 Men's Australian Open winner]\nPlan: Once the winner is identified, search for their exact hometown using Google. #E2 = Google[Hometown of 2024 Men's Australian Open winner]", 'steps': [("Use Google to search for the 2024 Men's Australian Open winner. ", '#E1', 'Google', "2024 Men's Australian Open winner"), ('Once the winner is identified, search for their exact hometown using Google. ', '#E2', 'Google', "Hometown of 2024 Men's Australian Open winner")]}}
---
{'tool': {'results': {'#E1': '[{\'url\': \'https://www.cbssports.com/tennis/news/australian-open-2024-jannik-sinner-aryna-sabalenka-crowned-as-grand-slam-singles-champions-at-melbourne-park/\', \'content\': "Qinwen Zheng, 6-3, 6-2\\nOur Latest Tennis Stories\\nSinner, Sabalenka win Australian Open singles titles\\nSinner makes epic comeback to win Australian Open\\n2024 Australian Open odds, Sinner vs. Medvedev picks\\nSabalenka defeats Zheng to win 2024 Australian Open\\n2024 Australian Open odds, Sabalenka vs. Zheng picks\\n2024 Australian Open odds, Medvedev vs. Zverev picks\\nAustralian Open odds: Djokovic vs. Sinner picks, bets\\nAustralian Open odds: Gauff vs. Sabalenka picks, bets\\nAustralian Open odds: Australian Open 2024: Jannik Sinner, Aryna Sabalenka crowned as Grand Slam singles champions at Melbourne Park\\nSinner and Sabalenka took down Daniil Medvedev and Qinwen Zheng in their respective finals\\nJannik Sinner came back from two sets down to beat Daniil Medvedev 3-6, 3-6, 6-4, 6-4, 6-3 in the Australian Open men\'s singles final, earning him his first ever Grand Slam title. Here is all you need to know about the 2024 Australian Open:\\nHow to watch the 2024 Australian Open\\nMen\'s seeding\\nWomen\'s seeding\\nMen\'s final:\\nNo. 4 Jannik Sinner def. The 22-year-old became the first Italian man to win the Australian Open since 1976, and he is also the youngest player to win at Melbourne Park since Novak Djokovic in 2008.\\n No. 3 Daniil Medvedev, 3-6, 3-6, 6-4, 6-4, 6-3\\nWomen\'s final:\\n"}, {\'url\': \'https://ausopen.com/articles/news/sinner-v-medvedev-how-ao-2024-mens-final-was-decided\', \'content\': "MORE: All the stats from the AO 2024 men’s final\\nDaniil Medvedev could not maintain his scintillating start on Sunday night, while first-time major finalist Jannik Sinner simply grew in strength as the five-set contest progressed.\\nSinner, winner: Italian takes first major at AO 2024\\nNEWS\\nSinner, the morning after: “It\'s great emotions, slowly realising what I\'ve done”\\nNEWS\\n Sinner v Medvedev: How the AO 2024 men\'s final was decided\\nJannik Sinner weathered an early onslaught to reel in Daniil Medvedev, growing in potency to win the Australian Open 2024 final – his first Grand Slam singles title.\\n Early in the second set Medvedev was averaging 77 per cent of first serves in for the match, and towards the end of it this figure had dipped to 65. Medvedev had spent more than 20 hours on court in his previous six rounds, the equivalent of almost two more matches than Sinner (who had spent less than 15 hours on court in advancing to the final).\\n During the shift, Sinner’s forehand was gathering speed, having increased from an average of 122.3 km/h in the first set to 128.7 km/h by the third.\\n"}, {\'url\': \'https://m.youtube.com/watch?v=frRVq6FI_5c\', \'content\': \'Watch the highlights of Jannik Sinner v Daniil Medvedev in the final of the Australian Open 2024.Subscribe to keep up with the latest from the Australian Ope...\'}, {\'url\': \'https://www.cbssports.com/tennis/news/australian-open-2024-jannik-sinner-claims-first-grand-slam-title-in-epic-comeback-win-over-daniil-medvedev/\', \'content\': \'"\\nOur Latest Tennis Stories\\nSinner makes epic comeback to win Australian Open\\nSinner, Sabalenka win Australian Open singles titles\\n2024 Australian Open odds, Sinner vs. Medvedev picks\\nSabalenka defeats Zheng to win 2024 Australian Open\\n2024 Australian Open odds, Sabalenka vs. Zheng picks\\n2024 Australian Open odds, Medvedev vs. Zverev picks\\nAustralian Open odds: Djokovic vs. Sinner picks, bets\\nAustralian Open odds: Gauff vs. Sabalenka picks, bets\\nAustralian Open odds: Zheng vs. Yastremska picks, bets\\nNick Kyrgios reveals he\\\'s contemplating retirement\\n© 2004-2024 CBS Interactive. Jannik Sinner claims first Grand Slam title in epic comeback win over Daniil Medvedev\\nSinner, 22, rallied back from a two-set deficit to become the third ever Italian Grand Slam men\\\'s singles champion\\nAfter almost four hours, Jannik Sinner climbed back from a two-set deficit to win his first ever Grand Slam title with an epic 3-6, 3-6, 6-4, 6-4, 6-3 comeback victory against Daniil Medvedev. Sinner became the first Italian man to win the Australian Open since 1976, and just the eighth man to successfully come back from two sets down in a major final.\\n He did not drop a single set until his meeting with Djokovic, and that win in itself was an accomplishment as Djokovic was riding a 33-match winning streak at the Australian Open and had never lost a semifinal in Melbourne.\\n @janniksin • @wwos • @espn • @eurosport • @wowowtennis pic.twitter.com/DTCIqWoUoR\\n"We are trying to get better everyday, and even during the tournament, trying to get stronger and understand the situation a little bit better," Sinner said.\'}, {\'url\': \'https://m.youtube.com/watch?v=FQxTbCczz-g\', \'content\': \'The moment Jannik Sinner won his first Grand Slam title after beating Daniil Medvedev in the final of the Australian Open 2024.Subscribe to keep up with the ...\'}]'}}}
---
{'tool': {'results': {'#E1': '[{\'url\': \'https://www.cbssports.com/tennis/news/australian-open-2024-jannik-sinner-aryna-sabalenka-crowned-as-grand-slam-singles-champions-at-melbourne-park/\', \'content\': "Qinwen Zheng, 6-3, 6-2\\nOur Latest Tennis Stories\\nSinner, Sabalenka win Australian Open singles titles\\nSinner makes epic comeback to win Australian Open\\n2024 Australian Open odds, Sinner vs. Medvedev picks\\nSabalenka defeats Zheng to win 2024 Australian Open\\n2024 Australian Open odds, Sabalenka vs. Zheng picks\\n2024 Australian Open odds, Medvedev vs. Zverev picks\\nAustralian Open odds: Djokovic vs. Sinner picks, bets\\nAustralian Open odds: Gauff vs. Sabalenka picks, bets\\nAustralian Open odds: Australian Open 2024: Jannik Sinner, Aryna Sabalenka crowned as Grand Slam singles champions at Melbourne Park\\nSinner and Sabalenka took down Daniil Medvedev and Qinwen Zheng in their respective finals\\nJannik Sinner came back from two sets down to beat Daniil Medvedev 3-6, 3-6, 6-4, 6-4, 6-3 in the Australian Open men\'s singles final, earning him his first ever Grand Slam title. Here is all you need to know about the 2024 Australian Open:\\nHow to watch the 2024 Australian Open\\nMen\'s seeding\\nWomen\'s seeding\\nMen\'s final:\\nNo. 4 Jannik Sinner def. The 22-year-old became the first Italian man to win the Australian Open since 1976, and he is also the youngest player to win at Melbourne Park since Novak Djokovic in 2008.\\n No. 3 Daniil Medvedev, 3-6, 3-6, 6-4, 6-4, 6-3\\nWomen\'s final:\\n"}, {\'url\': \'https://ausopen.com/articles/news/sinner-v-medvedev-how-ao-2024-mens-final-was-decided\', \'content\': "MORE: All the stats from the AO 2024 men’s final\\nDaniil Medvedev could not maintain his scintillating start on Sunday night, while first-time major finalist Jannik Sinner simply grew in strength as the five-set contest progressed.\\nSinner, winner: Italian takes first major at AO 2024\\nNEWS\\nSinner, the morning after: “It\'s great emotions, slowly realising what I\'ve done”\\nNEWS\\n Sinner v Medvedev: How the AO 2024 men\'s final was decided\\nJannik Sinner weathered an early onslaught to reel in Daniil Medvedev, growing in potency to win the Australian Open 2024 final – his first Grand Slam singles title.\\n Early in the second set Medvedev was averaging 77 per cent of first serves in for the match, and towards the end of it this figure had dipped to 65. Medvedev had spent more than 20 hours on court in his previous six rounds, the equivalent of almost two more matches than Sinner (who had spent less than 15 hours on court in advancing to the final).\\n During the shift, Sinner’s forehand was gathering speed, having increased from an average of 122.3 km/h in the first set to 128.7 km/h by the third.\\n"}, {\'url\': \'https://m.youtube.com/watch?v=frRVq6FI_5c\', \'content\': \'Watch the highlights of Jannik Sinner v Daniil Medvedev in the final of the Australian Open 2024.Subscribe to keep up with the latest from the Australian Ope...\'}, {\'url\': \'https://www.cbssports.com/tennis/news/australian-open-2024-jannik-sinner-claims-first-grand-slam-title-in-epic-comeback-win-over-daniil-medvedev/\', \'content\': \'"\\nOur Latest Tennis Stories\\nSinner makes epic comeback to win Australian Open\\nSinner, Sabalenka win Australian Open singles titles\\n2024 Australian Open odds, Sinner vs. Medvedev picks\\nSabalenka defeats Zheng to win 2024 Australian Open\\n2024 Australian Open odds, Sabalenka vs. Zheng picks\\n2024 Australian Open odds, Medvedev vs. Zverev picks\\nAustralian Open odds: Djokovic vs. Sinner picks, bets\\nAustralian Open odds: Gauff vs. Sabalenka picks, bets\\nAustralian Open odds: Zheng vs. Yastremska picks, bets\\nNick Kyrgios reveals he\\\'s contemplating retirement\\n© 2004-2024 CBS Interactive. Jannik Sinner claims first Grand Slam title in epic comeback win over Daniil Medvedev\\nSinner, 22, rallied back from a two-set deficit to become the third ever Italian Grand Slam men\\\'s singles champion\\nAfter almost four hours, Jannik Sinner climbed back from a two-set deficit to win his first ever Grand Slam title with an epic 3-6, 3-6, 6-4, 6-4, 6-3 comeback victory against Daniil Medvedev. Sinner became the first Italian man to win the Australian Open since 1976, and just the eighth man to successfully come back from two sets down in a major final.\\n He did not drop a single set until his meeting with Djokovic, and that win in itself was an accomplishment as Djokovic was riding a 33-match winning streak at the Australian Open and had never lost a semifinal in Melbourne.\\n @janniksin • @wwos • @espn • @eurosport • @wowowtennis pic.twitter.com/DTCIqWoUoR\\n"We are trying to get better everyday, and even during the tournament, trying to get stronger and understand the situation a little bit better," Sinner said.\'}, {\'url\': \'https://m.youtube.com/watch?v=FQxTbCczz-g\', \'content\': \'The moment Jannik Sinner won his first Grand Slam title after beating Daniil Medvedev in the final of the Australian Open 2024.Subscribe to keep up with the ...\'}]', '#E2': '[{\'url\': "https://en.wikipedia.org/wiki/2024_Australian_Open_–_Men\'s_singles_final", \'content\': "This was the first Australian Open final since 2005 not to feature any of the Big Three members.[5]\\nMedvedev set an Open Era record for the most time spent playing at a singles major, at 24 hours and 17 minutes.[6] Medvedev also became the first player in the Open Era to lose two major finals after having a two-set lead.[7]\\nBackground[edit]\\nEntering the final, Medvedev lead the career head-to-head 6–3. He became the second Italian man in the Open Era to win a singles major, after Adriano Panatta at the 1976 French Open,[2] and the first new Australian Open champion in ten years, since Stan Wawrinka in 2014.[3] At 22, Sinner was the youngest Australian Open men\'s singles champion and finalist since Novak Djokovic in 2008.[4] Contents\\n2024 Australian Open – Men\'s singles final\\nThe 2024 Australian Open Men\'s Singles final was the championship tennis match of the men\'s singles tournament at the 2024 Australian Open, contested by fourth-seed Jannik Sinner and third-seed Daniil Medvedev. Also in the semifinals, Medvedev came back from two-sets-to-love down against Alexander Zverev to reach a third Australian Open final.[9] Medvedev had already played two other five-set matches, against Emil Ruusuvuori in the second round (when he came back from two-sets-to-love down as well) and against Hubert Hurkacz in the quarterfinals.\\n Novak Djokovic, ending his 33-match winning streak at the Australian Open (dating back from the 2019 tournament), as well as marking the Serbian\'s first-ever defeat in an Australian Open semifinal and his first defeat in any major semifinal since the 2019 French Open."}, {\'url\': "https://en.wikipedia.org/wiki/2024_Australian_Open_–_Men\'s_singles", \'content\': "Jannik Sinner defeated Daniil Medvedev in the final, 3-6, 3-6, 6-4, 6-4, 6-3 to win the men\'s singles tennis title at the 2024 Australian Open.It was his first major singles title.. Sinner became both the first Italian to win the Australian Open and the second Italian man in the Open Era to win a singles major, after Adriano Panatta at the 1976 French Open. [1]"}, {\'url\': \'https://www.cbssports.com/tennis/news/australian-open-2024-jannik-sinner-aryna-sabalenka-crowned-as-grand-slam-singles-champions-at-melbourne-park/\', \'content\': "Qinwen Zheng, 6-3, 6-2\\nOur Latest Tennis Stories\\nSinner, Sabalenka win Australian Open singles titles\\nSinner makes epic comeback to win Australian Open\\n2024 Australian Open odds, Sinner vs. Medvedev picks\\nSabalenka defeats Zheng to win 2024 Australian Open\\n2024 Australian Open odds, Sabalenka vs. Zheng picks\\n2024 Australian Open odds, Medvedev vs. Zverev picks\\nAustralian Open odds: Djokovic vs. Sinner picks, bets\\nAustralian Open odds: Gauff vs. Sabalenka picks, bets\\nAustralian Open odds: Australian Open 2024: Jannik Sinner, Aryna Sabalenka crowned as Grand Slam singles champions at Melbourne Park\\nSinner and Sabalenka took down Daniil Medvedev and Qinwen Zheng in their respective finals\\nJannik Sinner came back from two sets down to beat Daniil Medvedev 3-6, 3-6, 6-4, 6-4, 6-3 in the Australian Open men\'s singles final, earning him his first ever Grand Slam title. Here is all you need to know about the 2024 Australian Open:\\nHow to watch the 2024 Australian Open\\nMen\'s seeding\\nWomen\'s seeding\\nMen\'s final:\\nNo. 4 Jannik Sinner def. The 22-year-old became the first Italian man to win the Australian Open since 1976, and he is also the youngest player to win at Melbourne Park since Novak Djokovic in 2008.\\n No. 3 Daniil Medvedev, 3-6, 3-6, 6-4, 6-4, 6-3\\nWomen\'s final:\\n"}, {\'url\': \'https://www.nine.com.au/sport/tennis/australian-open-final-2024-live-results-scores-mens-winner-daniil-medvedev-jannik-sinner-womens-doubles-updates-20240129-p5jcbe.html\', \'content\': "Australian Open day 15 schedule AEDT \\ufeffClick here for all live scores, fixtures and results across all courts Watch the 2024 Australian Open live and exclusive on Nine, 9Now and ad-free on Stan Sport. Women\'s doubles\\ufeff final. From 3pm: \\ufeff[11] Jelena Ostapenko (LAT)/Lyudmyla Kichenok (UKR) def by [2] Su-Wei Hsieh (TWN)/Elise Mertens (BEL) 6-1, 7-5. Men\'s singles final\\ufeff"}, {\'url\': \'https://www.bbc.com/sport/tennis/68120937\', \'content\': \'Live scores, results and order of play\\nAlerts: Get tennis news sent to your phone\\nRelated Topics\\nTop Stories\\nFA Cup: Blackburn Rovers v Wrexham - live text commentary\\nRussian skater Valieva given four-year ban for doping\\nLinks to Barcelona are \\\'totally untrue\\\' - Arteta\\nElsewhere on the BBC\\nThe truth behind the fake grooming scandal\\nFeaturing unseen police footage and interviews with the officers at the heart of the case\\nDid their father and uncle kill Nazi war criminals?\\n A real-life murder mystery following three brothers in their quest for the truth\\nWhat was it like to travel on the fastest plane?\\nTake a behind-the-scenes look at the supersonic story of the Concorde\\nToxic love, ruthless ambition and shocking betrayal\\nTell Me Lies follows a passionate college relationship with unimaginable consequences...\\n "\\nMarathon man Medvedev runs out of steam\\nMedvedev is the first player to lose two Grand Slam finals after winning the opening two sets\\nSo many players with the experience of a Grand Slam final have talked about how different the occasion can be, particularly if it is the first time, and potentially overwhelming.\\n Jannik Sinner beats Daniil Medvedev in Melbourne final\\nJannik Sinner is the youngest player to win the Australian Open men\\\'s title since Novak Djokovic in 2008\\nJannik Sinner landed the Grand Slam title he has long promised with an extraordinary fightback to beat Daniil Medvedev in the Australian Open final.\\n "\\nSinner starts 2024 in inspired form\\nSinner won the first Australian Open men\\\'s final since 2005 which did not feature Roger Federer, Rafael Nadal or Novak Djokovic\\nSinner was brought to the forefront of conversation when discussing Grand Slam champions in 2024 following a stunning end to last season.\\n\'}]'}}}
---
{'solve': {'result': 'San Candido, Italy'}}
---


# Print out the final result
print(s["solve"]["result"])

San Candido, Italy

结论

恭喜您实现了 ReWOO！在您离开之前，我将向您介绍论文中当前实现的几个局限性

  1. 如果环境上下文很少，规划器在使用工具时将效率低下。这通常可以通过少样本提示和/或微调来改善。
  2. 任务仍然按顺序执行，这意味着总执行时间受每个工具调用的影响，而不仅仅是给定步骤中运行时间最长的调用。

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