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card.py

@@ -1,9 +1,12 @@
-from typing import List, Optional, Union
+from dataclasses import dataclass
+from typing import Dict, List, Optional, Union
 
 from .artifact import Artifact
 from .instructions import InstructionsDict, InstructionsList
 from .loaders import Loader
+from .normalizers import NormalizeListFields
 from .operator import StreamingOperator
+from .operators import AddFields, MapInstanceValues
 from .task import FormTask
 from .templates import TemplatesDict, TemplatesList
 
@@ -11,10 +14,11 @@ from .templates import TemplatesDict, TemplatesList
 class TaskCard(Artifact):
     loader: Loader
     task: FormTask
-    preprocess_steps: Optional[List[StreamingOperator]] = None
+    preprocess_steps: Optional[List[Union[StreamingOperator, str]]] = None
     templates: Union[TemplatesList, TemplatesDict] = None
     instructions: Union[InstructionsList, InstructionsDict] = None
 
+
 class ICLCard(Artifact):
     demos_pool_name: str = "demos_pool"
     demos_pool_size: int = None