app.py

import os
os.environ["OPENAI_API_KEY"]

from llama_index import VectorStoreIndex, SimpleDirectoryReader

import os.path
from llama_index import (
    VectorStoreIndex,
    SimpleDirectoryReader,
    StorageContext,
    load_index_from_storage,
)

# load the existing index
PERSIST_DIR = "./storage"
storage_context = StorageContext.from_defaults(persist_dir=PERSIST_DIR)
index = load_index_from_storage(storage_context)

import gradio as gr

def nishauri(question):
    query_engine = index.as_query_engine()
    response = query_engine.query(question)
    return response

demo = gr.Interface(
    title = "Nishauri Chatbot Demo",
    fn=nishauri,
    inputs=["text"],
    outputs=["text"],
)

demo.launch()