app.py

import gradio as gr
from transformers import pipeline

# Charger le modèle UNE seule fois
translator = pipeline("translation", model="Helsinki-NLP/opus-mt-en-fr")

def chat(message, history):
    # Traduction
    translated = translator(message)[0]['translation_text']
    
    # Ajouter au chat
    history.append((message, translated))
    
    return history

# Interface chat
demo = gr.ChatInterface(fn=chat)

demo.launch()