Update app.py

app.py

@@ -17,15 +17,27 @@ class BasicAgent:
     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)]
-        messages = self.graph.invoke({"messages": messages})
-        answer = messages['messages'][-1].content
-        return answer[14:]
-
+       print(f"Agent received question (first 50 chars): {question[:50]}...")
+       messages = [HumanMessage(content=question)]
+       messages = self.graph.invoke({"messages": messages})
+       answer_full = messages['messages'][-1].content
+
+       # Use .split() to get the part after "FINAL ANSWER: "
+       # .strip() removes any leading/trailing whitespace
+       if answer_full.startswith("FINAL ANSWER: "):
+           answer = answer_full.split("FINAL ANSWER: ", 1)[1].strip()
+       else:
+           # Handle cases where the prefix might be missing
+           # or the LLM didn't follow the format.
+           # You might want to log this or return the full answer_full
+           # depending on how strictly you want to enforce the format.
+           answer = answer_full
+           print(f"Warning: 'FINAL ANSWER:' prefix not found. Returning full response: {answer_full[:100]}...")
+
+       return answer
+        
 def run_and_submit_all( profile: gr.OAuthProfile | None):
     """
     Fetches all questions, runs the BasicAgent on them, submits all answers,