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from adrf.views import APIView as AsyncAPIView
from drf_spectacular.utils import extend_schema
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.parsers import MultiPartParser
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain_huggingface import HuggingFaceEmbeddings
# from langchain_community.embeddings import HuggingFaceEmbeddings
from langchain.prompts import PromptTemplate
from langchain_core.prompts import ChatPromptTemplate
from langchain_community.document_loaders import PyPDFLoader
from langchain_community.vectorstores import Chroma
from langchain_google_genai import ChatGoogleGenerativeAI
# from langchain_community.chat_models import ChatOpenAI
from langchain_openai import ChatOpenAI
from langchain.schema import Document
from langchain.chains import create_extraction_chain
from rank_bm25 import BM25Okapi
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