code: from dotenv import load_dotenv
  from langchain_core.prompts import PromptTemplate
  
  load_dotenv()
  from langchain import hub
  from langchain.agents import create_react_agent, AgentExecutor
  from langchain_core.tools import Tool
  from langchain_openai import ChatOpenAI
  
  from tools.tools import get_profile_url
  
  
  def lookup(name: str) -> str:
      llm = ChatOpenAI(temperature=0, model_name="gpt-3.5-turbo")
      template = """
         given the name {name_of_person} I want you to find a link to their Twitter profile page, and extract from it their username
         In Your Final answer only the person's username"""
      tools_for_agent_twitter = [
          Tool(
              name="Crawl Google 4 Twitter profile page",
              func=get_profile_url,
              description="useful for when you need get the Twitter Page URL",
          ),
      ]
  
      # agent = initialize_agent(
      #     tools_for_agent_twitter,
      #     llm,
      #     agent=AgentType.ZERO_SHOT_REACT_DESCRIPTION,
      #     verbose=True,
      # )
  
      prompt_template = PromptTemplate(
          input_variables=["name_of_person"], template=template
      )
  
      react_prompt = hub.pull("hwchase17/react")
      agent = create_react_agent(
          llm=llm, tools=tools_for_agent_twitter, prompt=react_prompt
      )
      agent_executor = AgentExecutor(
          agent=agent, tools=tools_for_agent_twitter, verbose=True
      )
  
      result = agent_executor.invoke(
          input={"input": prompt_template.format_prompt(name_of_person=name)}
      )
  
      twitter_username = result["output"]
  
      return twitter_username
  
apis: langchain_core.prompts.PromptTemplate langchain.agents.AgentExecutor langchain.hub.pull langchain_openai.ChatOpenAI langchain_core.tools.Tool langchain.agents.create_react_agent
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