Update app.py

app.py

@@ -3,6 +3,8 @@ import gradio as gr
 import requests
 import inspect
 import pandas as pd
+from agent import agent_graph
+from langchain_core.messages import HumanMessage
 
 # (Keep Constants as is)
 # --- Constants ---
@@ -13,11 +15,15 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 class BasicAgent:
     def __init__(self):
         print("BasicAgent initialized.")
+        self.graph = agent_graph
     def __call__(self, question: str) -> str:
-        print(f"Agent received question (first 50 chars): {question[:50]}...")
-        fixed_answer = "This is a default answer."
-        print(f"Agent returning fixed answer: {fixed_answer}")
-        return fixed_answer
+        messages = [HumanMessage(content=question)]
+        response = self.graph.invoke({"messages": messages})
+        last_msg = response["messages"][-1].content
+        
+        if "FINAL ANSWER:" in last_msg:
+            return last_msg.split("FINAL ANSWER:")[-1].strip()
+        return last_msg
 
 def run_and_submit_all( profile: gr.OAuthProfile | None):
     """