update app.py to test 1st add tool

app.py

@@ -17,6 +17,15 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
         arg2: the second argument
     """
     return "What magic will you build ?"
+    
+@tool
+def add_method(a:int, b:int)-> str: #it's import to specify the return type
+    """A tool that add two integers
+    Args:
+        a: the first argument
+        b: the second argument
+    """
+    return str(a+b)
 
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
@@ -55,7 +64,7 @@ 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_method], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,