Refactor app.py to improve module import handling and error reporting. Added current directory to Python path for better module accessibility. Implemented try-except block for importing dvd_evaluator, enhancing robustness by providing clear error messages and exiting gracefully on failure.

app.py

@@ -1,5 +1,10 @@
-from flask import Flask, render_template, request, jsonify, send_from_directory
 import os
+import sys
+
+# Add the current directory to Python path
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from flask import Flask, render_template, request, jsonify, send_from_directory
 import tempfile
 import pandas as pd
 from werkzeug.utils import secure_filename
@@ -12,15 +17,19 @@ from langchain_core.messages import HumanMessage, SystemMessage
 import tiktoken
 import json
 from dotenv import load_dotenv
-from dvd_evaluator import (
-    generate_mcqs_for_note,
-    present_mcqs_to_content,
-    MCQ,
-    Document
-)
-
-# Load environment variables
-load_dotenv()
+try:
+    from dvd_evaluator import (
+        generate_mcqs_for_note,
+        present_mcqs_to_content,
+        MCQ,
+        Document
+    )
+    print("Successfully imported dvd_evaluator")
+    
+except Exception as e:
+    print(f"Error importing dvd_evaluator: {str(e)}")
+    sys.exit(1)
+
 
 # Define data models
 class MCQ(BaseModel):