fix

app.py

@@ -18,7 +18,15 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
 @tool
 def serper_search(query: str) -> str:
-    """Search the web using Serper API for current information and specific queries."""
+    """
+    Search the web using Serper API for current information and specific queries.
+
+    Args:
+        query: The search query string.
+
+    Returns:
+        Search results as a formatted string.
+    """
     api_key = os.getenv("SERPER_API_KEY")
     if not api_key:
         return "SERPER_API_KEY environment variable not found"