added transformer pipeline

app.py

@@ -8,7 +8,7 @@ from botocore.client import Config
 
 from huggingface_hub import AsyncInferenceClient
 
-from transformers import AutoModelForCausalLM, AutoTokenizer, TextIteratorStreamer
+from transformers import AutoModelForCausalLM, AutoTokenizer, TextIteratorStreamer, pipeline
 
 from langchain.text_splitter import RecursiveCharacterTextSplitter
 from langchain.llms import HuggingFaceHub
@@ -17,6 +17,9 @@ from langchain.vectorstores import Chroma
 from langchain.chains import RetrievalQA
 from langchain.prompts import ChatPromptTemplate
 from langchain.document_loaders import WebBaseLoader
+from langchain.llms.huggingface_pipeline import HuggingFacePipeline
+
+
 
 from typing import Iterator