Delete app.py
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app.py
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import streamlit as st
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import pandas as pd
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import sqlite3
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from llama_index.core import StorageContext, load_index_from_storage
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from llama_index.llms.ollama import Ollama
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from llama_index.embeddings.huggingface import HuggingFaceEmbedding
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from llama_index.core import PromptTemplate
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import os
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version = 2.2
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# Initialize the SQLite3 database
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conn = sqlite3.connect('qa.db')
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c = conn.cursor()
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# Update the table creation to include the version column
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c.execute('CREATE TABLE IF NOT EXISTS qa (question TEXT, answer TEXT, version REAL)')
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conn.commit()
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# Read the LLM Model Description from a file
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def read_description_from_file(file_path):
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with open(file_path, 'r') as file:
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return file.read()
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# Define the folder containing the saved index
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INDEX_OUTPUT_PATH = "./output_index"
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# Ensure the output directory exists
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if not os.path.exists(INDEX_OUTPUT_PATH):
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raise ValueError(f"Index directory {INDEX_OUTPUT_PATH} does not exist")
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# Setup LLM and embedding model
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llm = Ollama(model="llama3", request_timeout=120.0)
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embed_model = HuggingFaceEmbedding(model_name="BAAI/bge-large-en-v1.5", trust_remote_code=True)
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# To load the index later, set up the storage context
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storage_context = StorageContext.from_defaults(persist_dir=INDEX_OUTPUT_PATH)
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loaded_index = load_index_from_storage(embed_model=embed_model, storage_context=storage_context)
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# Define a query engine (assuming it needs the LLM and embedding model)
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query_engine = loaded_index.as_query_engine(llm=llm, embed_model=embed_model)
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# Customise prompt template
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# Read the prompt template from a file
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qa_prompt_tmpl_str = read_description_from_file("tab2_pe.txt")
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qa_prompt_tmpl = PromptTemplate(qa_prompt_tmpl_str)
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query_engine.update_prompts(
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{"response_synthesizer:text_qa_template": qa_prompt_tmpl}
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)
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# Save the question and answer to the SQLite3 database
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def save_to_db(question, answer, version):
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c.execute('INSERT INTO qa (question, answer, version) VALUES (?, ?, ?)', (question, answer, version))
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conn.commit()
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# Fetch all data from the SQLite3 database
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def fetch_from_db():
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c.execute('SELECT * FROM qa')
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return c.fetchall()
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def main():
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st.title("How Much Does Mistral 7B Model Know About Wandsworth Council?")
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tab1, tab2, tab3 = st.tabs(["LLM Model Description", "Ask a Question", "View Q&A History"])
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with tab1:
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st.subheader("LLM Model Description")
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description = read_description_from_file("tab1_intro.txt")
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st.write(description)
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with tab2:
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st.subheader("Ask a Question")
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question = st.text_input("Enter your question:")
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if st.button("Get Answer"):
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if question:
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try:
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response = query_engine.query(question)
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# Try to extract the generated text
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try:
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# Extract the text from the response object (assuming it has a `text` attribute or method)
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if hasattr(response, 'text'):
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answer = response.text
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else:
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answer = str(response)
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except AttributeError as e:
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st.error(f"Error extracting text from response: {e}")
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answer = "Sorry, could not generate an answer."
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st.write(f"**Answer:** {answer}")
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# Save question and answer to database
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save_to_db(question, answer, version)
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except Exception as e:
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st.error(f"An error occurred: {e}")
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else:
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st.warning("Please enter a question")
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with tab3:
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st.subheader("View Q&A History")
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qa_data = fetch_from_db()
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if qa_data:
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df = pd.DataFrame(qa_data, columns=["Question", "Answer", "Version"])
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st.dataframe(df)
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else:
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st.write("No data available")
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if __name__ == "__main__":
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main()
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