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app.py
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import gradio as gr
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from langchain.document_loaders import PyPDFLoader
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from langchain.text_splitter import CharacterTextSplitter
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from langchain.embeddings import SentenceTransformerEmbeddings
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from langchain.vectorstores import FAISS
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from langchain.memory import ConversationBufferMemory
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from groq import Groq
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import requests
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from bs4 import BeautifulSoup
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client = Groq(api_key="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")
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embedding_model = SentenceTransformerEmbeddings(model_name="sentence-transformers/paraphrase-multilingual-MiniLM-L12-v2")
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memory = ConversationBufferMemory(memory_key="chat_history", return_messages=True)
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def process_pdf_with_langchain(pdf_path):
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"""Process the PDF file using LangChain for RAG."""
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loader = PyPDFLoader(pdf_path)
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documents = loader.load()
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text_splitter = CharacterTextSplitter(chunk_size=500, chunk_overlap=50)
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split_documents = text_splitter.split_documents(documents)
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vectorstore = FAISS.from_documents(split_documents, embedding_model)
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retriever = vectorstore.as_retriever(search_kwargs={"k": 3})
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return retriever
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def scrape_google_search(query, num_results=3):
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"""Search Google and return the top results."""
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headers = {"User-Agent": "Mozilla/5.0"}
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search_url = f"https://www.google.com/search?q={query}"
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response = requests.get(search_url, headers=headers)
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soup = BeautifulSoup(response.text, "html.parser")
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results = []
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for g in soup.find_all('div', class_='tF2Cxc')[:num_results]:
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title = g.find('h3').text
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link = g.find('a')['href']
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results.append(f"{title}: {link}")
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return "\n".join(results)
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def generate_response(query, retriever=None, use_web_search=False):
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"""Generate a response using LangChain with optional retriever and web search."""
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knowledge = ""
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if retriever:
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relevant_docs = retriever.get_relevant_documents(query)
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knowledge += "\n".join([doc.page_content for doc in relevant_docs])
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if use_web_search:
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web_results = scrape_google_search(query)
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knowledge += f"\n\nWeb Search Results:\n{web_results}"
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chat_history = memory.load_memory_variables({}).get("chat_history", "")
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context = (
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f"This is a conversation with ParvizGPT, an AI model designed by Amir Mahdi Parviz, "
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f"to help with tasks like answering questions in Persian, providing recommendations, and decision-making."
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)
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if knowledge:
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context += f"\n\nRelevant Knowledge:\n{knowledge}"
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if chat_history:
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context += f"\n\nChat History:\n{chat_history}"
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context += f"\n\nYou: {query}\nParvizGPT:"
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chat_completion = client.chat.completions.create(
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messages=[{"role": "user", "content": context}],
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model="llama-3.3-70b-versatile",
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)
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response = chat_completion.choices[0].message.content.strip()
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memory.save_context({"input": query}, {"output": response})
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return response
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def gradio_interface(user_message, pdf_file=None, enable_web_search=False):
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global retriever
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if pdf_file is not None:
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try:
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retriever = process_pdf_with_langchain(pdf_file.name)
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except Exception as e:
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return f"Error processing PDF: {e}"
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response = generate_response(user_message, retriever=retriever, use_web_search=enable_web_search)
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return response
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def clear_memory():
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memory.clear()
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return "Memory cleared!"
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retriever = None
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with gr.Blocks() as interface:
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gr.Markdown("## ParvizGPT with Memory and Web Search Toggle")
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with gr.Row():
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user_message = gr.Textbox(label="Your Question", placeholder="Type your question here...", lines=1)
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submit_btn = gr.Button("Submit")
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with gr.Row():
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pdf_file = gr.File(label="Upload PDF for Context (Optional)", type="filepath")
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enable_web_search = gr.Checkbox(label="Enable Web Search", value=False)
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with gr.Row():
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clear_memory_btn = gr.Button("Clear Memory")
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response_output = gr.Textbox(label="Response", placeholder="ParvizGPT's response will appear here.")
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submit_btn.click(gradio_interface, inputs=[user_message, pdf_file, enable_web_search], outputs=response_output)
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clear_memory_btn.click(clear_memory, inputs=[], outputs=response_output)
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gr.HTML(
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"""
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<script>
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document.addEventListener("keydown", function(event) {
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if (event.key === "Enter" && !event.shiftKey) {
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event.preventDefault();
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document.querySelector('button[title="Submit"]').click();
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}
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});
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</script>
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"""
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)
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interface.launch()
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