Update app.py

app.py

@@ -30,7 +30,7 @@ def load_example_image_groups(directory):
         if os.path.isdir(subdir_path):
             example_groups[subdir] = []
             images = [f for f in os.listdir(subdir_path) if f.lower().endswith(('.png', '.jpg', '.jpeg'))]
-            images are natsorted(images, key=natural_sort_key)
+            images = natsorted(images, key=natural_sort_key)
             for filename in images:
                 img = Image.open(os.path.join(subdir_path, filename))
                 example_groups[subdir].append(img)