Update tool2.py

tool2.py

@@ -1,4 +1,4 @@
-# tool.py
+# tool2.py
 import json
 import os
 from gradio_client import Client
@@ -8,6 +8,11 @@ import time  # Import the time module
 # Load question sets from JSON files
 def load_question_sets(directory='question_sets'):
     question_sets = {}
+    # Check if the directory exists before trying to list files
+    if not os.path.exists(directory):
+        print(f"Error: Directory '{directory}' not found.")
+        return {} # Return empty dictionary if directory is missing
+
     for filename in os.listdir(directory):
         if filename.endswith('.json'):
             exam_name = filename[:-5]  # Remove '.json' extension
@@ -95,9 +100,4 @@ def get_explanation_and_answer(index, selected_questions): # Added selected_ques
     """Retrieves explanation and correct answer for a question."""
     explanation = selected_questions[index].get('explanation', 'No explanation available for this question.')
     correct_answer = selected_questions[index].get('correct', 'No correct answer provided.')
-    return explanation, correct_answer
-
-
-
-# backend1.py - No changes needed as per problem description, but ensure it's in the same directory and defines 'exams'
-exams = list(question_sets_data.keys()) # backend1.py (simplified and corrected to use loaded exams)
+    return explanation, correct_answer