app.py

import gradio as gr

# Simple echo chatbot

def respond(message, history=[]):
    # Append user message to history
    history.append((message, ""))
    # Simple echo: bot replies with the same message
    reply = f"You said: {message}"
    history[-1] = (message, reply)
    return None, history

# Create Gradio interface
iface = gr.ChatInterface(fn=respond, title="Hello World Chatbot", description="A simple echo chatbot.")

if __name__ == "__main__":
    iface.launch()