Update app.py

app.py

@@ -1,11 +1,9 @@
 import gradio as gr
-import os
 from langchain.vectorstores import Chroma
 from langchain.document_loaders import PyPDFLoader
 from langchain.text_splitter import CharacterTextSplitter
-
 from langchain.embeddings import HuggingFaceInferenceAPIEmbeddings
-
+ 
 # Use Hugging Face Inference API embeddings
 inference_api_key = os.environ['HF']
 api_hf_embeddings = HuggingFaceInferenceAPIEmbeddings(