Update app.py

app.py

@@ -33,6 +33,21 @@ def get_current_time_in_timezone(timezone: str) -> str:
     except Exception as e:
         return f"Error fetching time for timezone '{timezone}': {str(e)}"
 
+# this is my first Agent!
+@tool
+def calculator(expression: str) -> str:
+    """A tool that evaluates mathematical expressions.
+    Args:
+        expression: A string containing a mathematical expression (e.g., '2 + 2', '5 * 10', 'sqrt(16)').
+    """
+    try:
+        # Use Python's built-in eval function for simple calculations
+        # This is safe as long as the agent is using it internally
+        result = eval(expression, {"__builtins__": {}}, {"sqrt": lambda x: x**0.5})
+        return f"Result of {expression} = {result}"
+    except Exception as e:
+        return f"Error calculating '{expression}': {str(e)}"
+
 
 final_answer = FinalAnswerTool()
 
@@ -55,7 +70,7 @@ 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, calculator], ## add your tools here (don't remove final answer)
     max_steps=6,
     verbosity_level=1,
     grammar=None,