Update app.py

Added the tool to the list

app.py

@@ -16,7 +16,7 @@ def add_two_numbers(arg1:int, arg2:int)-> str: #it's import to specify the retur
         arg1: an integer
         arg2: an integer
     """
-    return str(arg1 + arg2)
+    return f"The result is {arg1 + arg2}"
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
@@ -55,7 +55,7 @@ with open("prompts.yaml", 'r') as stream:
     
 agent = CodeAgent(
     model=model,
-    tools=[final_answer], ## add your tools here (don't remove final answer)
+    tools=[final_answer, add_two_numbers], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,