Update app.py

app.py

@@ -1,7 +1,6 @@
 import os
 import openai
 import gradio as gr
-import time
 
 # Set up password
 username = os.getenv('username')
@@ -38,9 +37,8 @@ def chat_with_assistant(message, history):
     # Handle the streaming response
     response_text = ""
     for chunk in response:
-        delta = chunk['choices'][0]['delta']
-        if 'content' in delta:
-            response_text += delta['content']
+        if hasattr(chunk.choices[0].delta, 'content'):
+            response_text += chunk.choices[0].delta.content
             yield response_text
 
 # Custom CSS for chat bubbles and colors