app.py

import gradio as gr

from transformers import pipeline




def translate(text,number):
    model1=''
    if number==1:
        model1='Helsinki-NLP/opus-mt-en-es'
    elif number==2:
        model1='Helsinki-NLP/opus-mt-en-fr'
    else:
        model1='Helsinki-NLP/opus-mt-en-ru'

    pipe=pipeline("translation", model=model1)  
    return  pipe(text)[0]["translation_text"]




demo = gr.Interface(fn=translate, inputs=["text","number"], outputs="json")
demo.launch()