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import streamlit as st
import os
from langchain_groq import ChatGroq
from langchain.text_splitter import RecursiveCharacterTextSplitter
from langchain.chains.combine_documents import create_stuff_documents_chain
from langchain_core.prompts import ChatPromptTemplate
from langchain.chains import create_retrieval_chain
from langchain_community.vectorstores import FAISS
from langchain_community.document_loaders import PyPDFDirectoryLoader
from langchain_google_genai import GoogleGenerativeAIEmbeddings
from dotenv import load_dotenv
import os
import time
load_dotenv()
## load the GROQ And OpenAI API KEY
groq_api_key=os.getenv('GROQ_API_KEY')
os.environ["GOOGLE_API_KEY"]=os.getenv("GOOGLE_API_KEY")
llm=ChatGroq(groq_api_key=groq_api_key, model_name="Llama3-8b-8192")
prompt=ChatPromptTemplate.from_template(
"""
Answer the questions based on the provided context only.
Please provide the most accurate response based on the question
<context>
{context}
<context>
Questions:{input}
"""
)
def vector_embedding():
if "vectors" not in st.session_state:
st.session_state.embeddings=GoogleGenerativeAIEmbeddings(model = "models/embedding-001")
st.session_state.loader=PyPDFDirectoryLoader("./Documents") ## Data Ingestion
st.session_state.docs=st.session_state.loader.load() ## Document Loading
st.session_state.text_splitter=RecursiveCharacterTextSplitter(chunk_size=1000,chunk_overlap=200) ## Chunk Creation
st.session_state.final_documents=st.session_state.text_splitter.split_documents(st.session_state.docs[:20]) #splitting
st.session_state.vectors=FAISS.from_documents(st.session_state.final_documents,st.session_state.embeddings) #vector OpenAI embeddings
st.header("Rag Model with multiple documents ChatBot")
prompt1=st.text_input("Enter Your Question From Documents")
if prompt1:
document_chain=create_stuff_documents_chain(llm,prompt)
retriever=st.session_state.vectors.as_retriever()
retrieval_chain=create_retrieval_chain(retriever,document_chain)
start=time.process_time()
response=retrieval_chain.invoke({'input':prompt1})
print("Response time :",time.process_time()-start)
st.write(response['answer'])
with st.sidebar:
st.title("Menu:")
if st.button("Documents Embedding"):
with st.spinner("Processing..."):
vector_embedding()
st.write("Vector Store DB Is Ready")
if st.button("Clear Chat Window", use_container_width=True, type="primary"):
st.session_state.history = []
st.rerun()
footer = """
---
#### Made By [Surat Banerjee](https://www.linkedin.com/in/surat-banerjee/)
"""
st.markdown(footer, unsafe_allow_html=True)
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