Update app.py

app.py

@@ -10,7 +10,6 @@ from langchain.schema import SystemMessage as SM,HumanMessage as HM, AIMessage a
 from langchain import hub
 import os
 import torch
-
 import importlib.util
 import logging
 from typing import Any, Dict, Iterator, List, Mapping, Optional
@@ -44,6 +43,7 @@ logger = logging.getLogger(__name__)
 
 
 class HuggingFacePipeline(BaseLLM):
+    global torch
     """HuggingFace Pipeline API.
 
     To use, you should have the ``transformers`` python package installed.