Update app.py

app.py

@@ -26,7 +26,7 @@ client = OpenAI(api_key=os.environ.get("OPENAI_API_KEY"))
 
 assistant, thread = None, None
 
-def today_tool(text: str) -> str:
+def today_tool() -> date:
     """Returns today's date. Use this function for any questions related to knowing today's date. 
        There is no input. This function always returns today's date."""
     return str(date.today())
@@ -217,7 +217,7 @@ def chat(message, history):
     global client, assistant, thread     
     
     if assistant == None:
-        assistant = load_assistant(client)
+        assistant = create_assistant(client)
     
     if thread == None or len(history) == 0:
         thread = create_thread(client)