Delete app.py
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KrishPawargi
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app.py
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import streamlit as st
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import requests
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from fpdf import FPDF
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import os
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from dotenv import load_dotenv
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from datetime import datetime
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import zipfile
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# Langchain Imports
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from langchain.memory import ConversationBufferMemory
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from langchain.chains import ConversationChain
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from langchain_community.llms import HuggingFaceHub
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# π Extract .streamlit folder if zipped
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if not os.path.exists(".streamlit"):
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with zipfile.ZipFile(".streamlit.zip", 'r') as zip_ref:
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zip_ref.extractall(".")
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# β
Load .env variables
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load_dotenv()
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HF_API_TOKEN = os.getenv("HF_API_TOKEN")
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# β
Initialize LangChain LLM
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llm = HuggingFaceHub(
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repo_id="mistralai/Mistral-7B-Instruct-v0.1",
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model_kwargs={"temperature": 0.7, "max_new_tokens": 2048},
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huggingfacehub_api_token=HF_API_TOKEN
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)
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# β
Setup LangChain memory and conversation
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if "memory" not in st.session_state:
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st.session_state.memory = ConversationBufferMemory()
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if "conversation" not in st.session_state:
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st.session_state.conversation = ConversationChain(
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llm=llm,
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memory=st.session_state.memory,
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verbose=False
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)
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# β
PDF generation function
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def save_trip_plan_as_pdf(text, filename="trip_plan.pdf"):
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pdf = FPDF()
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pdf.add_page()
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pdf.set_font("Arial", size=12)
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safe_text = text.encode('latin-1', 'ignore').decode('latin-1')
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pdf.multi_cell(0, 10, safe_text)
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pdf.output(filename)
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# β
Streamlit UI
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st.set_page_config(page_title="Intelligent Travel Planner", layout="wide")
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st.title("π§³ Intelligent Travel Planner Agent")
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# π― User inputs
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col1, col2 = st.columns(2)
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with col1:
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from_location = st.text_input("π Your Current Location", placeholder="e.g., Mumbai")
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destination = st.text_input("π Destination", placeholder="e.g., Manali")
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start_date = st.date_input("π
Start Date")
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with col2:
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end_date = st.date_input("π
End Date")
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budget = st.text_input("π° Budget (in INR)", placeholder="e.g., 5000")
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preferences = st.text_input("π― Preferences", placeholder="e.g., Adventure, Culture, Beaches")
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generate_button = st.button("βοΈ Generate Trip Plan")
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# β
Generate and display AI trip plan
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if generate_button:
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if from_location and destination and budget and preferences and start_date and end_date:
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user_prompt = (
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f"Create a detailed day-wise travel itinerary with for a trip to {destination} in India. "
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f"The trip should start on {start_date.strftime('%B %d, %Y')} and end on {end_date.strftime('%B %d, %Y')}, "
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f"with a total budget of βΉ{budget} INR. The traveler prefers {preferences.lower()} experiences. \n\n"
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f"Provide a **day-wise breakdown** of the trip including:\n"
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f"- Top tourist attractions\n"
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f"- Recommended local food\n"
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f"- Suggested experiences (markets, nature, etc.)\n"
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f"- Approximate daily expenses\n\n"
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f"Make sure the total plan is budget-friendly and culturally immersive. End with final tips."
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)
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with st.spinner("π§ Generating trip plan..."):
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ai_response = st.session_state.conversation.run(user_prompt)
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st.subheader("π Your AI-Generated Trip Plan")
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st.write(ai_response)
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save_trip_plan_as_pdf(ai_response)
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with open("trip_plan.pdf", "rb") as f:
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st.download_button("π Download as PDF", f, file_name="trip_plan.pdf")
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else:
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st.warning("π¨ Please fill out all fields above.")
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# π§ Follow-up Chat Section
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st.markdown("---")
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st.subheader("π¬ Ask Follow-Up Questions")
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follow_up = st.text_input("Ask a follow-up about your trip plan")
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if follow_up:
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with st.spinner("π‘ Thinking..."):
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response = st.session_state.conversation.run(follow_up)
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st.markdown(f"**AI:** {response}")
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