some update

agent.py

@@ -5,12 +5,9 @@ from retrievers import custom_retriever
 from langgraph.graph import START, StateGraph, MessagesState
 from langgraph.prebuilt import tools_condition, ToolNode
 from langchain_core.messages import SystemMessage, HumanMessage
+from prompt.system_prompt import SYSTEM_PROMPT
 
-# Load system prompt
-with open(settings.system_prompt_path, "r", encoding="utf-8") as f:
-    system_prompt = f.read()
-
-sys_msg = SystemMessage(content=system_prompt)
+sys_msg = SystemMessage(content=SYSTEM_PROMPT)
 
 def build_graph():
     llm = get_llm(settings.llm_provider)
@@ -41,4 +38,4 @@ if __name__ == "__main__":
     messages = [HumanMessage(content=question)]
     results = graph.invoke({"messages": messages})
     for m in results["messages"]:
-        print(m.content)
+        print(m.content)

app.py

@@ -3,6 +3,8 @@ import gradio as gr
 import requests
 import inspect
 import pandas as pd
+from langchain_core.messages import HumanMessage
+from agent import build_graph
 
 # (Keep Constants as is)
 # --- Constants ---
@@ -13,11 +15,14 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 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]}...")
-        fixed_answer = "This is a default answer."
-        print(f"Agent returning fixed answer: {fixed_answer}")
-        return fixed_answer
+        messages = [HumanMessage(content=question)]
+        messages = self.graph.invoke({"messages": messages})
+        answer = messages['messages'][-1].content
+        return answer[14:]
 
 def run_and_submit_all( profile: gr.OAuthProfile | None):
     """

prompt/system_prompt.py

@@ -0,0 +1,9 @@
+# prompt/system_prompt.py
+
+SYSTEM_PROMPT = """
+You are a helpful assistant tasked with answering questions using a set of tools. 
+Now, I will ask you a question. Report your thoughts, and finish your answer with the following template: 
+FINAL ANSWER: [YOUR FINAL ANSWER]. 
+YOUR FINAL ANSWER should be a number OR as few words as possible OR a comma separated list of numbers and/or strings. If you are asked for a number, don't use comma to write your number neither use units such as $ or percent sign unless specified otherwise. If you are asked for a string, don't use articles, neither abbreviations (e.g. for cities), and write the digits in plain text unless specified otherwise. If you are asked for a comma separated list, apply the above rules depending of whether the element to be put in the list is a number or a string.
+Your answer should only start with "FINAL ANSWER: ", then follows with the answer. 
+"""