Import langflow.field_typing.constants in

__init__.py

src/backend/langflow/field_typing/__init__.py

@@ -1,16 +1,35 @@
 from typing import Any
 
-from .constants import (AgentExecutor, BaseChatMemory, BaseLanguageModel,
-                        BaseLLM, BaseLoader, BaseMemory, BaseOutputParser,
-                        BasePromptTemplate, BaseRetriever, Callable, Chain,
-                        ChatPromptTemplate, Data, Document, Embeddings,
-                        NestedDict, Object, Prompt, PromptTemplate,
-                        TextSplitter, Tool, VectorStore)
+from .constants import (
+    AgentExecutor,
+    BaseChatMemory,
+    BaseLanguageModel,
+    BaseLLM,
+    BaseLoader,
+    BaseMemory,
+    BaseOutputParser,
+    BasePromptTemplate,
+    BaseRetriever,
+    Callable,
+    Chain,
+    ChatPromptTemplate,
+    Data,
+    Document,
+    Embeddings,
+    NestedDict,
+    Object,
+    Prompt,
+    PromptTemplate,
+    TextSplitter,
+    Tool,
+    VectorStore,
+)
 from .range_spec import RangeSpec
 
 
 def import_template_field():
     from langflow.template.field.base import TemplateField
+
     return TemplateField
 
 
@@ -21,12 +40,11 @@ def __getattr__(name: str) -> Any:
     elif name == "RangeSpec":
         return RangeSpec
     # The other names should work as if they were imported from constants
+    import langflow.field_typing.constants as constants
+
     return getattr(constants, name)
 
 
-
-
-
 __all__ = [
     "NestedDict",
     "Data",

src/backend/langflow/template/field/base.py

@@ -1,4 +1,3 @@
-from abc import ABC
 from typing import Any, Callable, Optional, Union
 
 from pydantic import BaseModel, ConfigDict, Field, field_serializer