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content_blocks: add missing blocks to aliases and formatting

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Mason Daugherty 2025-07-31 17:08:10 -04:00
parent 2cb48b685f
commit e1b8ae2e6c
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1 changed files with 14 additions and 10 deletions
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24
libs/core/langchain_core/messages/content_blocks.py
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@ -5,9 +5,8 @@
change in future releases.
This module provides a standardized data structure for representing inputs to and
outputs from Large Language Models. The core abstraction is the **Content Block**, a
``TypedDict`` that can represent a piece of text, an image, a tool call, or other
structured data.
outputs from LLMs. The core abstraction is the **Content Block**, a ``TypedDict`` that
can represent a piece of text, an image, a tool call, or other structured data.
Data **not yet mapped** to a standard block may be represented using the
``NonStandardContentBlock``, which allows for provider-specific data to be included
@ -58,8 +57,8 @@ that additional provider-specific fields are allowed.
Different LLM providers use distinct and incompatible API schemas. This module
introduces a unified, provider-agnostic format to standardize these interactions. A
message to or from a model is simply a `list` of `ContentBlock` objects, allowing for
the natural interleaving of text, images, and other content in a single, ordered
message to or from a model is simply a ``list`` of ``ContentBlock`` objects, allowing
for the natural interleaving of text, images, and other content in a single, ordered
sequence.
An adapter for a specific provider is responsible for translating this standard list of
@ -129,7 +128,7 @@ class Citation(TypedDict):
"""Annotation for citing data from a document.
.. note::
``start/end`` indices refer to the **response text**,
``start``/``end`` indices refer to the **response text**,
not the source text. This means that the indices are relative to the model's
response, not the original document (as specified in the ``url``).
@ -157,7 +156,7 @@ class Citation(TypedDict):
# For future consideration, if needed:
# provenance: NotRequired[str]
# """Provenance of the document, e.g., "Wikipedia", "arXiv", etc.
# """Provenance of the document, e.g., ``'Wikipedia'``, ``'arXiv'``, etc.
# Included for future compatibility; not currently implemented.
# """
@ -299,7 +298,7 @@ class ToolCall(TypedDict):
class ToolCallChunk(TypedDict):
"""A chunk of a tool call (e.g., as part of a stream).
When merging ToolCallChunks (e.g., via ``AIMessageChunk.__add__``),
When merging ``ToolCallChunks`` (e.g., via ``AIMessageChunk.__add__``),
all string attributes are concatenated. Chunks are only merged if their
values of ``index`` are equal and not ``None``.
@ -793,7 +792,7 @@ class NonStandardContentBlock(TypedDict):
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.
``ReasoningContentBlock`` and ``ToolCallContentBlocks``.
.. note::
``create_non_standard_block`` may also be used as a factory to create a
@ -822,6 +821,7 @@ class NonStandardContentBlock(TypedDict):
# --- Aliases ---
DataContentBlock = Union[
ImageContentBlock,
VideoContentBlock,
@ -832,6 +832,7 @@ DataContentBlock = Union[
ToolContentBlock = Union[
ToolCall,
ToolCallChunk,
CodeInterpreterCall,
CodeInterpreterOutput,
CodeInterpreterResult,
@ -842,6 +843,9 @@ ToolContentBlock = Union[
ContentBlock = Union[
TextContentBlock,
ToolCall,
ToolCallChunk,
Citation,
NonStandardAnnotation,
InvalidToolCall,
ReasoningContentBlock,
NonStandardContentBlock,
@ -851,7 +855,7 @@ ContentBlock = Union[
def _extract_typedict_type_values(union_type: Any) -> set[str]:
"""Extract the values of the 'type' field from a TypedDict union type."""
"""Extract the values of the ``'type'`` field from a TypedDict union type."""
result: set[str] = set()
for value in get_args(union_type):
annotation = value.__annotations__["type"]