Update app.py

app.py

@@ -21,7 +21,14 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
 cache = {}
 
-web_search = DuckDuckGoSearchTool()
+web_search = DuckDuckGoSearchTool(name)
+
+web_search = Tool(
+    name="duck_duck_go_search", 
+    func=DuckDuckGoSearch().run,
+    description="Use this tool to search the web using DuckDuckGo."
+)
+
 google_search = GoogleSearchTool(provider="serper")
 python_interpreter = PythonInterpreterTool(authorized_imports = [
     # standard library