Update app.py

app.py

@@ -21,6 +21,8 @@ except ImportError as e:
 class FaceRecognitionSystem:
     def __init__(self):
         self.setup_database()
+        global FACE_NET_AVAILABLE  # Declare global at the start of method
+        
         if FACE_NET_AVAILABLE:
             try:
                 self.mtcnn = MTCNN(keep_all=True, device='cpu')
@@ -28,7 +30,6 @@ class FaceRecognitionSystem:
                 print("✅ FaceNet models loaded successfully")
             except Exception as e:
                 print(f"❌ Error loading FaceNet models: {e}")
-                global FACE_NET_AVAILABLE
                 FACE_NET_AVAILABLE = False
     
     def setup_database(self):
@@ -66,6 +67,8 @@ class FaceRecognitionSystem:
         """
         Extract face embedding from image using FaceNet
         """
+        global FACE_NET_AVAILABLE
+        
         if not FACE_NET_AVAILABLE:
             return None, "Face recognition not available"
         
@@ -129,6 +132,8 @@ class FaceRecognitionSystem:
         """
         Recognize face from image and mark attendance
         """
+        global FACE_NET_AVAILABLE
+        
         if not FACE_NET_AVAILABLE:
             return image, "Face recognition not available"