Update tool2.py

tool2.py

@@ -39,9 +39,13 @@ def display_question(index, audio_enabled, selected_questions):
         return "Question index out of range.", [], None
 
 def get_explanation_and_answer(index, selected_questions):
-    """Retrieves the explanation and correct answer for a given question index."""
+    """Retrieves the explanation and correct answer for a given question index, handling missing explanations."""
     if 0 <= index < len(selected_questions):
-        return selected_questions[index]["explanation"], selected_questions[index]["answer"]
+        question_data = selected_questions[index]
+        # Use get() with a default value to handle missing 'explanation' key
+        explanation = question_data.get("explanation", "No explanation available.")
+        correct_answer = question_data["answer"]  # Assume 'answer' key always exists
+        return explanation, correct_answer
     return "No explanation available.", ""
 
 # Text-to-speech function with rate limiting, retry mechanism, and client rotation
@@ -98,54 +102,4 @@ try:
     clients.append(client_3)
     print("Loaded voice transformer TTS client (client_3) ✔")
 except ValueError as e:
-    print(f"Error loading voice transformer TTS client (client_3): {e}")
-    print("Voice Transformer Text-to-Speech (client_3) will be unavailable.")
-except Exception as e: # Catch other potential exceptions during client initialization
-    print(f"An unexpected error occurred during voice transformer TTS client (client_3) initialization: {e}")
-    print("Voice Transformer Text-to-Speech (client_3) will be unavailable.")
-
-if not clients:
-    print("No Text-to-speech clients loaded due to errors. Audio functionality will be disabled.")
-else:
-    print(f"Loaded {len(clients)} TTS clients.")
-
-# Text-to-speech function with rate limiting, retry mechanism, and client rotation
-def text_to_speech(text, retries=3, delay=5):
-    global clients # Ensure we are using the global clients list
-    if not clients: # If no clients are loaded, return None immediately
-        print("Warning: No Text-to-speech clients available.")
-        return None
-
-    client_index = 0  # Start with the first available client
-    for attempt in range(retries):
-        try:
-            client = clients[client_index % len(clients)] # Use modulo to cycle through available clients
-            client_index += 1 # Increment client_index for the next attempt in case of rate limit
-            print(f"Attempt {attempt + 1} using client: {client_index % len(clients) + 1}") # Client index for logging (1-based)
-            if client == client_fast: # Check if using client_fast
-                result = client.predict(
-                    language="English",
-                    repo_id="csukuangfj/vits-piper-en_US-hfc_female-medium|1 speaker",
-                    text=text,
-                    sid="0",
-                    speed=0.8,
-                    api_name="/process"
-                )
-            else: # Assuming client_2 or client_3 or any other client in the future
-                result = client.predict(
-                    text=text,
-                    api_name="/predict"
-                )
-            return result
-        except httpx.HTTPStatusError as e:
-            if e.response.status_code == 429:
-                print(f"Rate limit exceeded using client {client_index % len(clients) + 1}. Retrying in {delay} seconds...")
-                time.sleep(delay)
-            else:
-                raise e
-        except Exception as e: # Catch any other potential errors during prediction
-            print(f"Error during text-to-speech prediction using client {client_index % len(clients) + 1}: {e}")
-            # Consider rotating client on any error, not just rate limits, to try other clients if available
-            client_index += 1 # Rotate to the next client for the next attempt
-    print("Max retries exceeded for all TTS clients. Could not process the request.")
-    return None
+    print(f"Error loading voice transformer TTS client (