drkareemkamal commited on
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Delete app.py

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  1. app.py +0 -104
app.py DELETED
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- #from langchain import PromptTemplate
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- from langchain_core.prompts import PromptTemplate
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- import os
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- from langchain_community.embeddings import HuggingFaceBgeEmbeddings
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- from langchain_community.vectorstores import FAISS
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- from langchain_community.llms.ctransformers import CTransformers
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- #from langchain.chains import RetrievalQA
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- from langchain.chains.retrieval_qa.base import RetrievalQA
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-
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- DB_FAISS_PATH = 'vectorstores/'
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-
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- custom_prompt_template = '''use the following pieces of information to answer the user's questions.
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- If you don't know the answer, please just say that don't know the answer, don't try to make uo an answer.
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-
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- Context : {context}
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- Question : {question}
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-
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- only return the helpful answer below and nothing else.
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- '''
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-
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- def set_custom_prompt():
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- """
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- Prompt template for QA retrieval for vector stores
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- """
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- prompt = PromptTemplate(template = custom_prompt_template,
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- input_variables = ['context','question'])
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-
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- return prompt
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-
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-
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- def load_llm():
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- llm = CTransformers(
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- model = 'TheBloke/Llama-2-7B-Chat-GGML',
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- #model = AutoModel.from_pretrained("TheBloke/Llama-2-7B-Chat-GGML"),
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- model_type = 'llama',
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- max_new_token = 512,
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- temperature = 0.5
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- )
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- return llm
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-
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- def retrieval_qa_chain(llm,prompt,db):
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- qa_chain = RetrievalQA.from_chain_type(
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- llm = llm,
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- chain_type = 'stuff',
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- retriever = db.as_retriever(search_kwargs= {'k': 2}),
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- return_source_documents = True,
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- chain_type_kwargs = {'prompt': prompt}
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- )
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-
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- return qa_chain
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-
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- def qa_bot():
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- embeddings = HuggingFaceBgeEmbeddings(model_name = 'sentence-transformers/all-MiniLM-L6-v2',
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- model_kwargs = {'device':'cpu'})
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-
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-
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- db = FAISS.load_local(DB_FAISS_PATH, embeddings,allow_dangerous_deserialization=True)
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- llm = load_llm()
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- qa_prompt = set_custom_prompt()
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- qa = retrieval_qa_chain(llm,qa_prompt, db)
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-
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- return qa
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-
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- def final_result(query):
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- qa_result = qa_bot()
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- response = qa_result({'query' : query})
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-
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- return response
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-
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-
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- import streamlit as st
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-
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- # Initialize the bot
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- bot = qa_bot()
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-
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- # def process_query(query):
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- # # Here you would include the logic to process the query and return a response
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- # response, sources = bot.answer_query(query) # Modify this according to your bot implementation
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- # if sources:
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- # response += f"\nSources: {', '.join(sources)}"
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- # else:
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- # response += "\nNo Sources Found"
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- # return response
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- def process_query(query):
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- # Here you would include the logic to process the query and return a response
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- response = bot({'query': query})
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- response_text = response['result']
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- sources = response.get('source_documents', [])
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- if sources:
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- source_list = ', '.join([source.metadata['source'] for source in sources])
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- response_text += f"\nSources: {source_list}"
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- else:
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- response_text += "\nNo Sources Found"
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- return response_text
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-
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-
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- # Setting up the Streamlit app
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- st.title('Medical Chatbot')
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-
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- user_input = st.text_input("Hi, welcome to the medical Bot. What is your query?")
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-
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- if user_input:
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- output = process_query(user_input)
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- st.text_area("Response", output, height=300)