Update app.py

I added a custom tool to search news headlines using the DuckDuckGo tool

app.py

@@ -18,6 +18,19 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     """
     return "What magic will you build ?"
 
+@tool
+def get_news_headlines(headline: str)-> str:
+    """A tool that fetches the most recent headlines
+    Args:
+        headline: A string representing the latest news headlines
+    """
+    try:
+        hl = DuckDuckGoSearchTool()
+        results = hl.run(f"{topic} news")
+        return f"The current news headlines are {results}"
+    except Exception as e:
+        return f"Error fetching news headlines"
+
 @tool
 def get_current_time_in_timezone(timezone: str) -> str:
     """A tool that fetches the current local time in a specified timezone.