langchain_core() — langchain Function Reference

Architecture documentation for the langchain_core() function in __init__.py from the langchain codebase.

Function python LangChainCore ApiManagement

Entity Profile

LangChainCore→ ApiManagement→ langchain_core() — langchain Function Reference

Dependency Diagram

graph TD
  e4b0f0f5_f5df_c197_4b2d_a865d29ca4c0["langchain_core()"]
  679db589_ff5b_4b37_91dc_380ea341be7c["__init__.py"]
  e4b0f0f5_f5df_c197_4b2d_a865d29ca4c0 -->|defined in| 679db589_ff5b_4b37_91dc_380ea341be7c
  style e4b0f0f5_f5df_c197_4b2d_a865d29ca4c0 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

libs/core/langchain_core/messages/__init__.py lines 9–70

    from langchain_core.messages.ai import (
        AIMessage,
        AIMessageChunk,
        InputTokenDetails,
        OutputTokenDetails,
        UsageMetadata,
    )
    from langchain_core.messages.base import (
        BaseMessage,
        BaseMessageChunk,
        merge_content,
        message_to_dict,
        messages_to_dict,
    )
    from langchain_core.messages.block_translators.openai import (
        convert_to_openai_data_block,
        convert_to_openai_image_block,
    )
    from langchain_core.messages.chat import ChatMessage, ChatMessageChunk
    from langchain_core.messages.content import (
        Annotation,
        AudioContentBlock,
        Citation,
        ContentBlock,
        DataContentBlock,
        FileContentBlock,
        ImageContentBlock,
        InvalidToolCall,
        NonStandardAnnotation,
        NonStandardContentBlock,
        PlainTextContentBlock,
        ReasoningContentBlock,
        ServerToolCall,
        ServerToolCallChunk,
        ServerToolResult,
        TextContentBlock,
        VideoContentBlock,
        is_data_content_block,
    )
    from langchain_core.messages.function import FunctionMessage, FunctionMessageChunk
    from langchain_core.messages.human import HumanMessage, HumanMessageChunk
    from langchain_core.messages.modifier import RemoveMessage
    from langchain_core.messages.system import SystemMessage, SystemMessageChunk
    from langchain_core.messages.tool import (
        ToolCall,
        ToolCallChunk,
        ToolMessage,
        ToolMessageChunk,
    )
    from langchain_core.messages.utils import (
        AnyMessage,
        MessageLikeRepresentation,
        _message_from_dict,
        convert_to_messages,
        convert_to_openai_messages,
        filter_messages,
        get_buffer_string,
        merge_message_runs,
        message_chunk_to_message,
        messages_from_dict,
        trim_messages,
    )