Update app.py

app.py

@@ -34,7 +34,7 @@ def get_current_time_in_timezone(timezone: str) -> str:
         return f"Error fetching time for timezone '{timezone}': {str(e)}"
 
 @tool
-def get_currency_value(money_1:str, money_2:str):
+def get_currency_value(money_1:str, money_2:str) -> str:
     """A tool that fetches the specific currency value.
     Args:
         money_1: A string representing a valid base currency (e.g. 'Turkish Liras/try').