Update app.py

app.py

@@ -15,7 +15,12 @@ from llama_index.legacy.llms import OpenAI
 import sqlite3
 
 # Set up OpenAI API Key
-os.environ['OPENAI_API_KEY'] = "YOUR_OPENAI_API_KEY"
+# Load the OpenAI API key from the environment variable
+openai.api_key = os.getenv("OPENAI_API_KEY")
+
+# Check if the API key is set
+if not openai.api_key:
+    raise ValueError("OPENAI_API_KEY environment variable is not set")
 
 # Function to load database and LLM
 def load_db_llm():