Update index.py

index.py

@@ -4,6 +4,8 @@ from langchain.vectorstores.chroma import Chroma
 from langchain.embeddings.openai import OpenAIEmbeddings
 from langchain.text_splitter import CharacterTextSplitter
 from langchain.document_loaders import DirectoryLoader, TextLoader
+from langchain.llms import HuggingFaceHub
+
 from PyPDF2 import PdfReader
 from dotenv import load_dotenv
 load_dotenv()
@@ -34,9 +36,7 @@ def create_index(file_path: str) -> None:
 
     texts = text_splitter.split_documents(documents)
 
-    embeddings = OpenAIEmbeddings(
-        openai_api_key=os.getenv('OPENAI_API_KEY')
-    )
+    embeddings = HuggingFaceInstructEmbeddings(model_name="hkunlp/instructor-xl")
 
     persist_directory = 'db'