fix (#1811)

Author: tastelikefeet

swift/llm/utils/argument.py

@@ -80,16 +80,14 @@ def _check_path(cls,
             value = res
         return value
 
-    @staticmethod
-    def _is_multimodal(model_type: Optional[str] = None) -> bool:
+    def _is_multimodal(self, model_type: Optional[str] = None) -> bool:
         if model_type is None:
             return False
         model_info = MODEL_MAPPING[model_type]
         tags = model_info.get('tags') or []
         return 'multi-modal' in tags
 
-    @staticmethod
-    def _is_vision(model_type: Optional[str] = None) -> bool:
+    def _is_vision(self, model_type: Optional[str] = None) -> bool:
         if model_type is None:
             return False
         model_info = MODEL_MAPPING[model_type]
@@ -1590,6 +1588,12 @@ def handle_infer_backend(self) -> None:
         if self.eval_url is None:
             super().handle_infer_backend()
 
+    def _is_multimodal(self, model_type: Optional[str] = None) -> bool:
+        return False
+
+    def _is_vision(self, model_type: Optional[str] = None) -> bool:
+        return False
+
 
 @dataclass
 class ExportArguments(InferArguments):

swift/llm/utils/utils.py

@@ -236,6 +236,8 @@ def __iter__(self):
             sequences = []
             for example in buffer:
                 input, _ = self.template.encode(example)
+                if not input:
+                    continue
                 sequences.append((input, len(input['input_ids'])))
 
             packed_sequences = self.calculate_matched_group(sequences)