Update app.py

app.py

@@ -11,13 +11,13 @@ from transformers import AutoModelForCausalLM, AutoModelForSequenceClassificatio
 from huggingface_hub import login
 
 
-login(token=os.getenv('HF_KEY'))
+login(token=os.getenv("HF_KEY"))
 
 # Initialize Embedding Model
 embedding_model = HuggingFaceEmbeddings(model_name="sentence-transformers/all-MiniLM-L6-v2")
 
 # Pinecone Retriever
-api_key = os.getenv('PINCE_CONE_LIGHT')
+api_key = os.getenv("PINCE_CONE_LIGHT")
 if api_key is None:
     raise ValueError("Pinecone API key missing.")
 else:
@@ -35,7 +35,7 @@ llm_options = {
 def load_llm(name, model_name):
     """Loads the selected LLM model only when needed."""
     if name == "OpenAI":
-        openai_api_key = os.getenv('OPEN_AI_KEY')
+        openai_api_key = os.getenv("OPEN_AI_KEY")
         return ChatOpenAI(model='gpt-4o-mini', openai_api_key=openai_api_key)
     
     if "Phi" in name or "DeepSeek" in name: