app.py

import gradio as gr
from huggingface_hub import InferenceClient

client = InferenceClient("google/gemma-2-2b-it")

def respond(message, history):
    
    messages = [{"role": "system", "content": "You are a friendly chatbot."}]
    
    if history:
      for user_msg, assistant_msg in history:
        messages.append({"role": "user", "content": user_msg})
        messages.append({"role": "assistant", "content": assistant_msg})
        
    messages.append({"role": "user", "content": message})
    
    response = client.chat_completion(
        messages,
        max_tokens=100
    )
    
    return response['choices'][0]['message']['content'].strip()

chatbot = gr.ChatInterface(respond)

chatbot.launch()