Update app.py

app.py

@@ -22,29 +22,31 @@ def run_agent():
         for idx, q in enumerate(qa_data, start=1):
             task_id = q.get("task_id")
             question = q.get("question")
-            file_text = None
+            file_text = ""
 
             file_name = q.get("file_name", "")
             if file_name:
                 file_path = os.path.join("data", file_name)
                 try:
                     if file_name.endswith(".pdf"):
-                        file_text = read_pdf(file_path)
+                        with open(file_path, "rb") as f:
+                            file_text = read_pdf(f.read())
                     elif file_name.endswith(".csv"):
-                        file_text = read_csv(file_path)
+                        with open(file_path, "rb") as f:
+                            file_text = read_csv(f.read())
                     elif file_name.endswith(".txt"):
-                        file_text = read_txt(file_path)
+                        with open(file_path, "rb") as f:
+                            file_text = read_txt(f.read())
                 except Exception as e:
                     status_lines.append(f"⚠️ Failed to read file {file_name}: {e}")
 
-            response = answer_question(question, file_context=file_text, do_search=False)
+            response = answer_question(question, file_context=file_text or "", do_search=False)
             answers.append({"task_id": task_id, "submitted_answer": response})
             status_lines.append(f"✅ Q{idx}: Answered")
 
-        status_lines.append(f"\n🎯 Done. {len(answers)} questions answered.")
         return "🎯 Done.\n\n" + "\n".join(
-    [f"✅ Q{idx+1} (ID {a['task_id']}): {a['submitted_answer']}" for idx, a in enumerate(answers)]
-)
+            [f"✅ Q{idx+1} (ID {a['task_id']}): {a['submitted_answer']}" for idx, a in enumerate(answers)]
+        )
 
     except Exception as e:
         return f"❌ Error:\n{traceback.format_exc()}"