Update app.py

app.py

@@ -19,8 +19,8 @@ def fetch_headlines(topic: str) -> str:
     Returns:
         A formatted string with up to 5 news headlines and their links.
     """
+    search_tool = DuckDuckGoSearchTool()
     try:
-        search_tool = DuckDuckGoSearchTool()
         query = f"{topic} news"
         results = search_tool(query)