Update app.py

app.py

@@ -28,16 +28,16 @@ assistant_id = "asst_ypbcWnilAd60bc2DQ8haDL5P"
 
 assistant, thread = None, None
 
-def today_tool() -> str:
+def today_tool(str) -> str:
     """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."""
+       The input should be an empty string. This function always returns today's date."""
     return str(date.today())
 
-def yf_download_tool(tickers: List[str], start_date: date, end_date: date) -> pd.DataFrame:
-    """Returns historical stock data for given tickers from a start date to an end date 
+def yf_download_tool(ticker: str, start_date: date, end_date: date) -> pd.DataFrame:
+    """Returns historical stock data for a given ticker from start date to end date 
        using the yfinance library download function. 
        Use this function for any questions related to getting historical stock data. 
-       The input should be the tickers as a List of strings, a start date, and an end date. 
+       The input should be a ticker string, a start date, and an end date. 
        This function always returns a pandas DataFrame."""
     return yf.download(tickers, start=start_date, end=end_date)
 
@@ -223,7 +223,7 @@ def chat(message, history):
     global assistant, thread     
     
     if assistant == None:
-        assistant = load_assistant(client)
+        assistant = create_assistant(client)
     
     if thread == None or len(history) == 0:
         thread = create_thread(client)