from langchain.chains import LLMChain
from langchain.prompts import PromptTemplate
from langchain.llms import OpenAI
import pandas as pd
from langchain_community.document_loaders.csv_loader import CSVLoader
from langchain_community.vectorstores import FAISS
from langchain_openai import OpenAIEmbeddings
from langchain_text_splitters import RecursiveCharacterTextSplitter
import os
from langchain.tools.retriever import create_retriever_tool
from langchain import hub
from langchain_openai import ChatOpenAI
from langchain.agents import AgentExecutor, create_openai_tools_agent
from langchain.schema import SystemMessage, AIMessage, HumanMessage

os.environ['OPENAI_API_KEY']=os.getenv('OPENAI_API_KEY')