Update app.py

app.py

@@ -589,11 +589,12 @@ Available: {match.get('Available', 'N/A')}"""
                 final_response = "..." # Indicate potentially empty response
 
 
-        except Exception as gen_error:
-             print(f"Error during model generation in Pass 2: {gen_error}")
-             final_response = "Error generating response in Pass 2."
+    except Exception as gen_error: # <--- Error occurred here previously
+         print(f"Error during model generation in Pass 2: {gen_error}")
+         final_response = "Error generating response in Pass 2."
 
-# --- Post-process Final Response from Pass 2 ---
+
+    # --- Post-process Final Response from Pass 2 ---
     cleaned_response = final_response
     # Filter out the Pass 2 instructions and context markers that might bleed through
     lines = cleaned_response.split('\n')
@@ -608,7 +609,7 @@ Available: {match.get('Available', 'N/A')}"""
     # Extract and list URLs from the search results that were actually used
     # This assumes the model uses the provided snippets with URLs
     urls_to_list = [result.get('href') for result in search_results_dicts if result.get('href')]
-    urls_to_list = list(dict.fromkeys(urls_to_list)) # Remove duplicates
+    urls_to_list = list(dict.fromkeys(urls_to_list)) # Remove duplicates # <-- THIS LINE WAS THE SOURCE OF THE PREVIOUS SYNTAX ERROR
 
     # Only add Sources if search was performed AND results were found
     if search_results_dicts and urls_to_list:
@@ -622,6 +623,9 @@ Available: {match.get('Available', 'N/A')}"""
          print("Warning: Final response was empty after cleaning.")
 
 
+# This 'else' block is tied to the 'if model is not None and tokenizer is not None:' check much earlier in the function
+# It seems correctly placed as a fallback if models didn't load at the start.
+# Make sure the indentation aligns with that outer 'if'.
 else: # Model or tokenizer not loaded
      final_response = "Sorry, the core language model is not available."
      print("Error: LLM model or tokenizer not loaded for Pass 2.")
@@ -639,6 +643,7 @@ if len(chat_history) > max_history_pairs:
 
 
 # Return the updated history state
+# This return statement is part of the 'respond' function
 return "", chat_history # Return empty string for the input box, and the updated history
 
 # --- Gradio Interface ---