update app.py

app.py

@@ -16,7 +16,9 @@ def my_custom_tool(state:str, altitude:int)-> str: #it's import to specify the r
         state: A string representing the state who's capital we need to identify
         altitude: The altitude of the state capital we've identified
     """
-    return "The altitude of '{state}'s capital is '{altitude}'"
+    try:
+        use DuckDuckGoSearchTool()
+        return f"The altitude of '{state}'s capital is '{altitude}'"