fix

libs/core/langchain_core/messages/content_blocks.py

@@ -108,6 +108,7 @@ from uuid import uuid4
 
 from typing_extensions import NotRequired, TypedDict, TypeGuard, get_args, get_origin
 
+
 def _ensure_id(id_val: Optional[str]) -> str:
     """Ensure the ID is a valid string, generating a new UUID if not provided.
 
@@ -313,6 +314,7 @@ class ToolCallChunk(TypedDict):
             + AIMessageChunk(content="", tool_call_chunks=right_chunks)
         ).tool_call_chunks == [ToolCallChunk(name='foo', args='{"a":1}', index=0)]
     """
+
     # TODO: Consider making fields NotRequired[str] in the future.
 
     type: NotRequired[Literal["tool_call_chunk"]]
@@ -584,9 +586,6 @@ class ImageContentBlock(TypedDict):
     """Provider-specific metadata."""
 
 
-class VideoContentBlock(TypedDict):
-    """Video data.
-
 class VideoContentBlock(TypedDict):
     """Video data.
 
@@ -763,7 +762,7 @@ class FileContentBlock(TypedDict):
 
     mime_type: NotRequired[str]
     """MIME type of the file. Required for base64.
-    
+
     `Examples from IANA <https://www.iana.org/assignments/media-types/media-types.xhtml>`__
 
     """
@@ -822,49 +821,6 @@ class NonStandardContentBlock(TypedDict):
     """Index of block in aggregate response. Used during streaming."""
 
 
-# --- Aliases ---
-
-# Future modalities to consider:
-# - 3D models
-# - Tabular data
-
-
-class NonStandardContentBlock(TypedDict):
-    """Provider-specific data.
-
-    This block contains data for which there is not yet a standard type.
-
-    The purpose of this block should be to simply hold a provider-specific payload.
-    If a provider's non-standard output includes reasoning and tool calls, it should be
-    the adapter's job to parse that payload and emit the corresponding standard
-    ReasoningContentBlock and ToolCallContentBlocks.
-
-    .. note::
-        ``create_non_standard_block`` may also be used as a factory to create a
-        ``NonStandardContentBlock``. Benefits include:
-
-        * Automatic ID generation (when not provided)
-        * Required arguments strictly validated at creation time
-
-    """
-
-    type: Literal["non_standard"]
-    """Type of the content block. Used for discrimination."""
-
-    id: NotRequired[str]
-    """Content block identifier. Either:
-
-    - Generated by the provider (e.g., OpenAI's file ID)
-    - Generated by LangChain upon creation (``UUID4`` prefixed with ``'lc_'``))
-    """
-
-    value: dict[str, Any]
-    """Provider-specific data."""
-
-    index: NotRequired[int]
-    """Index of block in aggregate response. Used during streaming."""
-
-
 # --- Aliases ---
 DataContentBlock = Union[
     ImageContentBlock,
@@ -999,6 +955,7 @@ def is_invalid_tool_call_block(
     """Type guard to check if a content block is an invalid tool call."""
     return block.get("type") == "invalid_tool_call"
 
+
 def convert_to_openai_image_block(block: dict[str, Any]) -> dict:
     """Convert image content block to format expected by OpenAI Chat Completions API."""
     if "url" in block: