Update web_demo.py

chat/web_demo.py

@@ -8,7 +8,6 @@ Please refer to these links below for more information:
 Please run with the command `streamlit run path/to/web_demo.py --server.address=0.0.0.0 --server.port 7860`.
 Using `python path/to/web_demo.py` may cause unknown problems.
 """
-
 import copy
 import warnings
 from dataclasses import asdict, dataclass
@@ -17,11 +16,13 @@ from typing import Callable, List, Optional
 import streamlit as st
 import torch
 from torch import nn
-from transformers import AutoModelForCausalLM, AutoTokenizer
 from transformers.generation.utils import (LogitsProcessorList,
                                            StoppingCriteriaList)
 from transformers.utils import logging
 
+from transformers import AutoTokenizer, AutoModelForCausalLM  # isort: skip
+
+
 logger = logging.get_logger(__name__)