app.py

import torch
import transformers
from transformers import BertTokenizer, BertForMaskedLM
import gradio as gr

device = torch.device('cpu')

NUM_CLASSES=6

def test():
    return {"token": 0.57}
    
gr.Interface(fn=test, 
             inputs=gr.inputs.Textbox(lines=2, placeholder="Your Text… "),
             title="Mask Language Modeling - Demo",
             outputs=gr.outputs.Label(num_top_classes=1)).launch()