Update app.py

app.py

@@ -12,12 +12,25 @@ DEFAULT_API_URL = "https://agents-course-unit4-scoring.hf.space"
 # ----- THIS IS WERE YOU CAN BUILD WHAT YOU WANT ------
 class BasicAgent:
     def __init__(self):
+        from openai import OpenAI
+        self.llm = OpenAI(api_key=os.getenv("OPENAI_API_KEY"))
         print("BasicAgent initialized.")
     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
+        prompt = f"""Answer the following concisely and exactly:
+{question}"""
+        try:
+            response = self.llm.chat.completions.create(
+                model="gpt-4o",
+                 messages=[
+                    {"role": "system", "content": "You are an expert AI assistant."},
+                    {"role": "user", "content": prompt}
+                ],
+                temperature=0.2,
+            )
+            return response.choices[0].message.content.strip()
+        except Exception as e:
+            return f"ERROR: {e}"
+        
 
 def run_and_submit_all( profile: gr.OAuthProfile | None):
     """