__init__.py — langchain Source File

Source Code

"""**Agent** is a class that uses an LLM to choose a sequence of actions to take.

In Chains, a sequence of actions is hardcoded. In Agents,
a language model is used as a reasoning engine to determine which actions
to take and in which order.

Agents select and use **Tools** and **Toolkits** for actions.
"""

from pathlib import Path
from typing import TYPE_CHECKING, Any

from langchain_core._api.path import as_import_path
from langchain_core.tools import Tool
from langchain_core.tools.convert import tool

from langchain_classic._api import create_importer
from langchain_classic.agents.agent import (
    Agent,
    AgentExecutor,
    AgentOutputParser,
    BaseMultiActionAgent,
    BaseSingleActionAgent,
    LLMSingleActionAgent,
)
from langchain_classic.agents.agent_iterator import AgentExecutorIterator
from langchain_classic.agents.agent_toolkits.vectorstore.base import (
    create_vectorstore_agent,
    create_vectorstore_router_agent,
)
from langchain_classic.agents.agent_types import AgentType
from langchain_classic.agents.conversational.base import ConversationalAgent
from langchain_classic.agents.conversational_chat.base import ConversationalChatAgent
from langchain_classic.agents.initialize import initialize_agent
from langchain_classic.agents.json_chat.base import create_json_chat_agent
from langchain_classic.agents.loading import load_agent
from langchain_classic.agents.mrkl.base import MRKLChain, ZeroShotAgent
from langchain_classic.agents.openai_functions_agent.base import (
    OpenAIFunctionsAgent,
    create_openai_functions_agent,
)
from langchain_classic.agents.openai_functions_multi_agent.base import (
    OpenAIMultiFunctionsAgent,
)
from langchain_classic.agents.openai_tools.base import create_openai_tools_agent
from langchain_classic.agents.react.agent import create_react_agent
from langchain_classic.agents.react.base import ReActChain, ReActTextWorldAgent
from langchain_classic.agents.self_ask_with_search.base import (
    SelfAskWithSearchChain,
    create_self_ask_with_search_agent,
)
from langchain_classic.agents.structured_chat.base import (
    StructuredChatAgent,
    create_structured_chat_agent,
)
from langchain_classic.agents.tool_calling_agent.base import create_tool_calling_agent
from langchain_classic.agents.xml.base import XMLAgent, create_xml_agent

if TYPE_CHECKING:
    from langchain_community.agent_toolkits.json.base import create_json_agent
// ... (105 more lines)