Update app.py

app.py

@@ -12,7 +12,9 @@ from langchain.document_loaders import PyPDFLoader, Docx2txtLoader, TextLoader,
 
 # Load environment variables from .env
 load_dotenv()
-os.environ["OPENAI_API_KEY"] = os.getenv("OPENAI_API_KEY")
+from openai import OpenAI
+api_key = os.getenv("OPENAI_API_KEY")
+client = OpenAI(api_key=api_key)
 
 # Custom template to guide the LLM
 custom_template = """