Create save subdirectories before writing

dumas_image_nodes.py

@@ -383,6 +383,7 @@ class DumasSaveImageNode:
             sub_dirs = resolved_parts[:-1]
             filename = resolved_parts[-1] if resolved_parts else f"image_{str(counter).zfill(3)}{extension}"
             frame_dir = os.path.join(target_dir, *sub_dirs)
+            os.makedirs(frame_dir, exist_ok=True)
             image = _tensor_image_to_pil_image(images[batch_index : batch_index + 1])
             full_path = os.path.join(frame_dir, filename)
 

tests/test_dumas_image_nodes.py

@@ -221,6 +221,23 @@ class DumasImageNodeTests(unittest.TestCase):
         saved_path = FakePILImage.saved_paths[0][0].replace("\\", "/")
         self.assertTrue(saved_path.endswith("/Char001/Char001.png"))
 
+    def test_save_image_creates_nested_directories_before_saving(self):
+        node = self.image_nodes.DumasSaveImageNode()
+        image = FakeTensorBatch()
+
+        node.save_images(
+            images=image,
+            folder=self.temp_dir,
+            pattern="Char_%counter%/Base",
+            format="png",
+            quality=100,
+            embed_workflow=False,
+            save_on_run=True,
+        )
+
+        saved_path = FakePILImage.saved_paths[0][0]
+        self.assertTrue(os.path.isdir(os.path.dirname(saved_path)))
+
     def test_save_image_returns_ui_entries_for_output_folder(self):
         node = self.image_nodes.DumasSaveImageNode()
         image = FakeTensorBatch()