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__init__.py — langchain Source File

Architecture documentation for __init__.py, a python file in the langchain codebase. 3 imports, 0 dependents.

File python LangChainCore LanguageModelBase 3 imports 2 functions

Entity Profile

Dependency Diagram

graph LR
  44a26625_a4d8_a853_e745_bdf739f9b78f["__init__.py"]
  feec1ec4_6917_867b_d228_b134d0ff8099["typing"]
  44a26625_a4d8_a853_e745_bdf739f9b78f --> feec1ec4_6917_867b_d228_b134d0ff8099
  e4596b95_ed91_0e47_96dd_7e987bc14a69["langchain_classic._api"]
  44a26625_a4d8_a853_e745_bdf739f9b78f --> e4596b95_ed91_0e47_96dd_7e987bc14a69
  51ea8235_141a_4d08_24af_cd770aa474cc["langchain_community.chat_message_histories"]
  44a26625_a4d8_a853_e745_bdf739f9b78f --> 51ea8235_141a_4d08_24af_cd770aa474cc
  style 44a26625_a4d8_a853_e745_bdf739f9b78f fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

from typing import TYPE_CHECKING, Any

from langchain_classic._api import create_importer

if TYPE_CHECKING:
    from langchain_community.chat_message_histories import (
        AstraDBChatMessageHistory,
        CassandraChatMessageHistory,
        ChatMessageHistory,
        CosmosDBChatMessageHistory,
        DynamoDBChatMessageHistory,
        ElasticsearchChatMessageHistory,
        FileChatMessageHistory,
        FirestoreChatMessageHistory,
        MomentoChatMessageHistory,
        MongoDBChatMessageHistory,
        Neo4jChatMessageHistory,
        PostgresChatMessageHistory,
        RedisChatMessageHistory,
        RocksetChatMessageHistory,
        SingleStoreDBChatMessageHistory,
        SQLChatMessageHistory,
        StreamlitChatMessageHistory,
        UpstashRedisChatMessageHistory,
        XataChatMessageHistory,
        ZepChatMessageHistory,
    )

# Create a way to dynamically look up deprecated imports.
# Used to consolidate logic for raising deprecation warnings and
# handling optional imports.
DEPRECATED_LOOKUP = {
    "AstraDBChatMessageHistory": "langchain_community.chat_message_histories",
    "CassandraChatMessageHistory": "langchain_community.chat_message_histories",
    "ChatMessageHistory": "langchain_community.chat_message_histories",
    "CosmosDBChatMessageHistory": "langchain_community.chat_message_histories",
    "DynamoDBChatMessageHistory": "langchain_community.chat_message_histories",
    "ElasticsearchChatMessageHistory": "langchain_community.chat_message_histories",
    "FileChatMessageHistory": "langchain_community.chat_message_histories",
    "FirestoreChatMessageHistory": "langchain_community.chat_message_histories",
    "MomentoChatMessageHistory": "langchain_community.chat_message_histories",
    "MongoDBChatMessageHistory": "langchain_community.chat_message_histories",
    "Neo4jChatMessageHistory": "langchain_community.chat_message_histories",
    "PostgresChatMessageHistory": "langchain_community.chat_message_histories",
    "RedisChatMessageHistory": "langchain_community.chat_message_histories",
    "RocksetChatMessageHistory": "langchain_community.chat_message_histories",
    "SQLChatMessageHistory": "langchain_community.chat_message_histories",
    "SingleStoreDBChatMessageHistory": "langchain_community.chat_message_histories",
    "StreamlitChatMessageHistory": "langchain_community.chat_message_histories",
    "UpstashRedisChatMessageHistory": "langchain_community.chat_message_histories",
    "XataChatMessageHistory": "langchain_community.chat_message_histories",
    "ZepChatMessageHistory": "langchain_community.chat_message_histories",
}

_import_attribute = create_importer(__package__, deprecated_lookups=DEPRECATED_LOOKUP)


def __getattr__(name: str) -> Any:
    """Look up attributes dynamically."""
    return _import_attribute(name)


__all__ = [
    "AstraDBChatMessageHistory",
    "CassandraChatMessageHistory",
    "ChatMessageHistory",
    "CosmosDBChatMessageHistory",
    "DynamoDBChatMessageHistory",
    "ElasticsearchChatMessageHistory",
    "FileChatMessageHistory",
    "FirestoreChatMessageHistory",
    "MomentoChatMessageHistory",
    "MongoDBChatMessageHistory",
    "Neo4jChatMessageHistory",
    "PostgresChatMessageHistory",
    "RedisChatMessageHistory",
    "RocksetChatMessageHistory",
    "SQLChatMessageHistory",
    "SingleStoreDBChatMessageHistory",
    "StreamlitChatMessageHistory",
    "UpstashRedisChatMessageHistory",
    "XataChatMessageHistory",
    "ZepChatMessageHistory",
]

Domain

Subdomains

Functions

Dependencies

  • langchain_classic._api
  • langchain_community.chat_message_histories
  • typing

Source

Frequently Asked Questions

What does __init__.py do?
__init__.py is a source file in the langchain codebase, written in python. It belongs to the LangChainCore domain, LanguageModelBase subdomain.
What functions are defined in __init__.py?
__init__.py defines 2 function(s): __getattr__, langchain_community.
What does __init__.py depend on?
__init__.py imports 3 module(s): langchain_classic._api, langchain_community.chat_message_histories, typing.
Where is __init__.py in the architecture?
__init__.py is located at libs/langchain/langchain_classic/memory/chat_message_histories/__init__.py (domain: LangChainCore, subdomain: LanguageModelBase, directory: libs/langchain/langchain_classic/memory/chat_message_histories).

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