Update app.py

app.py

@@ -12,14 +12,15 @@ from agent import build_graph
 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:
-        messages = [HumanMessage(content=question)]
+        print(f"Agent received question (first 50 chars): {question[:50]}...")
         state = {
-            "messages": messages,
+            "messages": [HumanMessage(content=question)],
             "query": question,
             "agent_type": "",
             "final_answer": "",
@@ -29,7 +30,12 @@ class BasicAgent:
         config = {"configurable": {"thread_id": f"eval_{hash(question)}"}}
         result = self.graph.invoke(state, config)
         answer = result['messages'][-1].content
-        return answer[14:]
+        # Robust extraction:
+        if "FINAL ANSWER:" in answer:
+            return answer.split("FINAL ANSWER:")[-1].strip()
+        else:
+            return answer.strip()
+
 
 def run_and_submit_all(profile: gr.OAuthProfile | None):
     """