Use filenames for caption if no main prompt in yaml

data/dataset.py

@@ -174,7 +174,7 @@ class Dataset:
     # Use file name for caption only as a last resort
     @classmethod
     def __ensure_caption(cls, cfg: ImageConfig, file: str):
-        if cfg.main_prompts or cfg.tags:
+        if cfg.main_prompts:
             return cfg
         cap_cfg = ImageConfig.from_caption_text(barename(file).split("_")[0])
         return cfg.merge(cap_cfg)
@@ -217,9 +217,13 @@ class Dataset:
         items = []
         for image in tqdm(self.image_configs, desc="preloading", dynamic_ncols=True):
             config = self.image_configs[image]
+
             if len(config.main_prompts) > 1:
                 logging.warning(f" *** Found multiple multiple main_prompts for image {image}, but only one will be applied: {config.main_prompts}")
 
+            if len(config.main_prompts) < 1:
+                logging.warning(f" *** No main_prompts for image {image}")
+
             tags = []
             tag_weights = []
             for tag in sorted(config.tags, key=lambda x: x.weight or 1.0, reverse=True):

test/test_data_resolver.py

@@ -75,7 +75,7 @@ class TestResolve(unittest.TestCase):
             'path': DATA_PATH,
         }
         
-        items = resolver.resolve(data_root_spec, ARGS)
+        items = sorted(resolver.resolve(data_root_spec, ARGS), key=lambda i: i.pathname)
         image_paths = [item.pathname for item in items]
         image_captions = [item.caption for item in items]
         captions = [caption.get_caption() for caption in image_captions]
@@ -88,7 +88,7 @@ class TestResolve(unittest.TestCase):
         self.assertEqual(len(undersized_images), 1)
     
     def test_json_resolve_with_str(self):
-        items = resolver.resolve(JSON_ROOT_PATH, ARGS)
+        items = sorted(resolver.resolve(JSON_ROOT_PATH, ARGS), key=lambda i: i.pathname)
         image_paths = [item.pathname for item in items]
         image_captions = [item.caption for item in items]
         captions = [caption.get_caption() for caption in image_captions]
@@ -124,14 +124,14 @@ class TestResolve(unittest.TestCase):
             JSON_ROOT_PATH,
         ]
         
-        items = resolver.resolve(data_root_spec, ARGS)
+        items = sorted(resolver.resolve(data_root_spec, ARGS), key=lambda i: i.pathname)
         image_paths = [item.pathname for item in items]
         image_captions = [item.caption for item in items]
         captions = [caption.get_caption() for caption in image_captions]
         
         self.assertEqual(len(items), 6)
-        self.assertEqual(image_paths, [IMAGE_1_PATH, IMAGE_2_PATH, IMAGE_3_PATH] * 2)
-        self.assertEqual(captions, ['caption for test1', 'test2', 'test3', 'caption for test1', 'caption for test2', 'test3'])
+        self.assertEqual(set(image_paths), set([IMAGE_1_PATH, IMAGE_2_PATH, IMAGE_3_PATH] * 2))
+        self.assertEqual(set(captions), {}'caption for test1', 'test2', 'test3', 'caption for test1', 'caption for test2', 'test3'})
         
         undersized_images = list(filter(lambda i: i.is_undersized, items))
         self.assertEqual(len(undersized_images), 2)

test/test_dataset.py

@@ -100,6 +100,24 @@ class TestDataset(TestCase):
         self.assertEqual(expected, actual)
 
 
+    def test_captions_are_read_from_filename_if_no_main_prompt(self):
+        self.fs.create_file("filename main prompt, filename tag.jpg")
+        self.fs.create_file("filename main prompt, filename tag.yaml", 
+            contents=dedent("""
+                caption: 
+                    tags: 
+                      - tag: standalone yaml tag
+                """))
+        actual = Dataset.from_path(".").image_configs
+
+        expected = {
+            "./filename main prompt, filename tag.jpg": ImageConfig(
+                main_prompts="filename main prompt", 
+                tags= [ Tag("filename tag"), Tag("standalone yaml tag") ]
+            )
+        }
+        self.assertEqual(expected, actual)
+    
     def test_multiple_prompts_and_tags_from_multiple_sidecars_are_supported(self):
         self.fs.create_file("image_1.jpg")
         self.fs.create_file("image_1.yaml", contents=dedent("""