Update app.py

app.py

@@ -18,18 +18,18 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 
 
 class BasicAgent:
+    """A langgraph agent."""
     def __init__(self):
+        print("BasicAgent initialized.")
         self.graph = build_graph()
 
     def __call__(self, question: str) -> str:
+        print(f"Agent received question (first 50 chars): {question[:50]}...")
+        # Wrap the question in a HumanMessage from langchain_core
         messages = [HumanMessage(content=question)]
-        response = self.graph.invoke({"messages": messages})
-        print(f"[DEBUG] Raw graph response: {response}")
-        if not response.get("messages"):
-            return "ERROR: No response from agent."
-        final_msg = response["messages"][-1]
-        print(f"[DEBUG] Final agent message: {final_msg}")
-        return final_msg.content.strip() if hasattr(final_msg, 'content') else "ERROR: Malformed response."
+        messages = self.graph.invoke({"messages": messages})
+        answer = messages['messages'][-1].content
+        return answer[14:]
 
 
 def run_and_submit_all( profile: gr.OAuthProfile | None):