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Atharva-28
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Delete app.py
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app.py
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# import streamlit as st
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# from PyPDF2 import PdfReader
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# from langchain.text_splitter import RecursiveCharacterTextSplitter
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# import os
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# from langchain_google_genai import GoogleGenerativeAIEmbeddings
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# import google.generativeai as genai
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# from langchain.vectorstores import FAISS
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# from langchain_google_genai import ChatGoogleGenerativeAI
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# from langchain.chains.question_answering import load_qa_chain
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# from langchain.prompts import PromptTemplate
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# from dotenv import load_dotenv
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# load_dotenv()
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# os.getenv("GOOGLE_API_KEY")
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# genai.configure(api_key=os.getenv("GOOGLE_API_KEY"))
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# def get_pdf_text(pdf_docs):
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# text=""
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# for pdf in pdf_docs:
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# pdf_reader= PdfReader(pdf)
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# for page in pdf_reader.pages:
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# text+= page.extract_text()
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# return text
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# def get_text_chunks(text):
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# text_splitter = RecursiveCharacterTextSplitter(chunk_size=10000, chunk_overlap=1000)
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# chunks = text_splitter.split_text(text)
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# return chunks
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# def get_vector_store(text_chunks):
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# embeddings = GoogleGenerativeAIEmbeddings(model = "models/embedding-001")
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# vector_store = FAISS.from_texts(text_chunks, embedding=embeddings)
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# vector_store.save_local("faiss_index",allow_dangerous_deserialization=True)
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# def get_conversational_chain():
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# prompt_template = """
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# Answer the question as detailed as possible from the provided context, make sure to provide all the details, if the answer is not in
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# provided context just say, "answer is not available in the context", don't provide the wrong answer\n\n
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# Context:\n {context}?\n
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# Question: \n{question}\n
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# Answer:
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# """
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# model = ChatGoogleGenerativeAI(model="gemini-pro",
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# temperature=0.3)
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# prompt = PromptTemplate(template = prompt_template, input_variables = ["context", "question"])
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# chain = load_qa_chain(model, chain_type="stuff", prompt=prompt)
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# return chain
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# def user_input(user_question):
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# embeddings = GoogleGenerativeAIEmbeddings(model = "models/embedding-001")
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# new_db = FAISS.load_local("faiss_index", embeddings)
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# docs = new_db.similarity_search(user_question)
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# chain = get_conversational_chain()
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# response = chain(
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# {"input_documents":docs, "question": user_question}
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# , return_only_outputs=True)
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# print(response)
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# st.write("Reply: ", response["output_text"])
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# def main():
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# st.set_page_config("Chat PDF")
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# st.header("Chat with PDF using Gemini💁")
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# user_question = st.text_input("Ask a Question from the PDF Files")
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# if user_question:
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# user_input(user_question)
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# with st.sidebar:
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# st.title("Menu:")
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# pdf_docs = st.file_uploader("Upload your PDF Files and Click on the Submit & Process Button", accept_multiple_files=True)
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# if st.button("Submit & Process"):
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# with st.spinner("Processing..."):
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# raw_text = get_pdf_text(pdf_docs)
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# text_chunks = get_text_chunks(raw_text)
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# get_vector_store(text_chunks)
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# st.success("Done")
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# if __name__ == "__main__":
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# main()
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import streamlit as st
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from dotenv import load_dotenv
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# import PyPDF2
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from PyPDF2 import PdfReader
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from langchain.text_splitter import CharacterTextSplitter
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from langchain.embeddings import OpenAIEmbeddings, HuggingFaceInstructEmbeddings
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from langchain_community.document_loaders import PyMuPDFLoader
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from langchain.vectorstores import FAISS
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from langchain.chat_models import ChatOpenAI
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from langchain.memory import ConversationBufferMemory
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from langchain.chains import ConversationalRetrievalChain
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from htmlTemplates import css, bot_template, user_template
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from langchain.llms import HuggingFaceHub
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def get_pdf_text(pdf_docs):
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text = ""
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for pdf in pdf_docs:
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pdf_reader = PdfReader(pdf)
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for page in pdf_reader.pages:
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text += page.extract_text()
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return text
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def get_text_chunks(text):
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text_splitter = CharacterTextSplitter(
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separator="\n",
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chunk_size=1000,
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chunk_overlap=200,
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length_function=len
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)
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chunks = text_splitter.split_text(text)
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return chunks
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def get_vectorstore(text_chunks):
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embeddings = OpenAIEmbeddings()
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# embeddings = HuggingFaceInstructEmbeddings(model_name="hkunlp/instructor-xl")
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vectorstore = FAISS.from_texts(texts=text_chunks, embedding=embeddings)
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return vectorstore
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def get_conversation_chain(vectorstore):
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llm = ChatOpenAI()
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# llm = HuggingFaceHub(repo_id="google/flan-t5-xxl", model_kwargs={"temperature":0.5, "max_length":512})
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memory = ConversationBufferMemory(
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memory_key='chat_history', return_messages=True)
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conversation_chain = ConversationalRetrievalChain.from_llm(
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llm=llm,
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retriever=vectorstore.as_retriever(),
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memory=memory
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)
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return conversation_chain
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def handle_userinput(user_question):
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response = st.session_state.conversation({'question': user_question})
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st.session_state.chat_history = response['chat_history']
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for i, message in enumerate(st.session_state.chat_history):
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if i % 2 == 0:
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st.write(user_template.replace(
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"{{MSG}}", message.content), unsafe_allow_html=True)
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else:
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st.write(bot_template.replace(
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"{{MSG}}", message.content), unsafe_allow_html=True)
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def main():
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load_dotenv()
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st.set_page_config(page_title="Chat with multiple PDFs",
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page_icon=":books:")
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st.write(css, unsafe_allow_html=True)
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if "conversation" not in st.session_state:
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st.session_state.conversation = None
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if "chat_history" not in st.session_state:
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st.session_state.chat_history = None
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st.header("Chat with multiple PDFs :books:")
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user_question = st.text_input("Ask a question about your documents:")
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if user_question:
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handle_userinput(user_question)
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with st.sidebar:
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st.subheader("Your documents")
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pdf_docs = st.file_uploader(
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"Upload your PDFs here and click on 'Process'", accept_multiple_files=True)
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if st.button("Process"):
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with st.spinner("Processing"):
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# get pdf text
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raw_text = get_pdf_text(pdf_docs)
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# get the text chunks
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text_chunks = get_text_chunks(raw_text)
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# create vector store
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vectorstore = get_vectorstore(text_chunks)
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# create conversation chain
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st.session_state.conversation = get_conversation_chain(
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vectorstore)
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if __name__ == '__main__':
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main()
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