Update app.py

app.py

@@ -97,10 +97,10 @@ def get_available_models(api_key):
     Args:
         api_key (str): Your OpenAI API key.
     """
-    openai.api_key = api_key  # Set the API key
 
     try:
-        client = openai.OpenAI()
+        client = openai.OpenAI(api_key=api_key)  # Instantiate OpenAI client with the API key
+
         models = client.models.list()
 
         print("Available models:")