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base.py — langchain Source File

Architecture documentation for base.py, a python file in the langchain codebase. 20 imports, 0 dependents.

File python AgentOrchestration ClassicChains 20 imports 1 functions 1 classes

Entity Profile

Dependency Diagram

graph LR
  0fdffdb8_b5ef_983c_15bf_420a6171b921["base.py"]
  f75eb023_c1ea_859a_7480_1e57f335d1de["builtins"]
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  be45a0bb_0276_f8f1_f985_55cddb92c224["contextlib"]
  0fdffdb8_b5ef_983c_15bf_420a6171b921 --> be45a0bb_0276_f8f1_f985_55cddb92c224
  589b2e2f_c593_ed0a_7906_df4ca371d542["inspect"]
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  9d14ea65_8b2e_6721_a947_acc89905651f["json"]
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  e27da29f_a1f7_49f3_84d5_6be4cb4125c8["logging"]
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  f3365e3c_fb7a_bb9a_bc79_059b06cb7024["warnings"]
  0fdffdb8_b5ef_983c_15bf_420a6171b921 --> f3365e3c_fb7a_bb9a_bc79_059b06cb7024
  50e20440_a135_6be3_a5a5_67791be5a2a6["abc"]
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  927570d8_11a6_5c17_0f0d_80baae0c733e["pathlib"]
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  feec1ec4_6917_867b_d228_b134d0ff8099["typing"]
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  a869785a_d507_1688_0b32_0ec94043975a["yaml"]
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  2485b66a_3839_d0b6_ad9c_a4ff40457dc6["langchain_core._api"]
  0fdffdb8_b5ef_983c_15bf_420a6171b921 --> 2485b66a_3839_d0b6_ad9c_a4ff40457dc6
  17a62cb3_fefd_6320_b757_b53bb4a1c661["langchain_core.callbacks"]
  0fdffdb8_b5ef_983c_15bf_420a6171b921 --> 17a62cb3_fefd_6320_b757_b53bb4a1c661
  4382dc25_6fba_324a_49e2_e9742d579385["langchain_core.outputs"]
  0fdffdb8_b5ef_983c_15bf_420a6171b921 --> 4382dc25_6fba_324a_49e2_e9742d579385
  31eab4ab_7281_1e6c_b17d_12e6ad9de07a["langchain_core.runnables"]
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  style 0fdffdb8_b5ef_983c_15bf_420a6171b921 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

"""Base interface that all chains should implement."""

import builtins
import contextlib
import inspect
import json
import logging
import warnings
from abc import ABC, abstractmethod
from pathlib import Path
from typing import Any, cast

import yaml
from langchain_core._api import deprecated
from langchain_core.callbacks import (
    AsyncCallbackManager,
    AsyncCallbackManagerForChainRun,
    BaseCallbackManager,
    CallbackManager,
    CallbackManagerForChainRun,
    Callbacks,
)
from langchain_core.outputs import RunInfo
from langchain_core.runnables import (
    RunnableConfig,
    RunnableSerializable,
    ensure_config,
    run_in_executor,
)
from langchain_core.utils.pydantic import create_model
from pydantic import (
    BaseModel,
    ConfigDict,
    Field,
    field_validator,
    model_validator,
)
from typing_extensions import override

from langchain_classic.base_memory import BaseMemory
from langchain_classic.schema import RUN_KEY

logger = logging.getLogger(__name__)


def _get_verbosity() -> bool:
    from langchain_classic.globals import get_verbose

    return get_verbose()


class Chain(RunnableSerializable[dict[str, Any], dict[str, Any]], ABC):
    """Abstract base class for creating structured sequences of calls to components.

    Chains should be used to encode a sequence of calls to components like
    models, document retrievers, other chains, etc., and provide a simple interface
    to this sequence.

    The Chain interface makes it easy to create apps that are:
        - Stateful: add Memory to any Chain to give it state,
// ... (747 more lines)

Domain

Subdomains

Functions

Classes

Dependencies

  • abc
  • builtins
  • contextlib
  • inspect
  • json
  • langchain_classic.base_memory
  • langchain_classic.globals
  • langchain_classic.schema
  • langchain_core._api
  • langchain_core.callbacks
  • langchain_core.outputs
  • langchain_core.runnables
  • langchain_core.utils.pydantic
  • logging
  • pathlib
  • pydantic
  • typing
  • typing_extensions
  • warnings
  • yaml

Source

Frequently Asked Questions

What does base.py do?
base.py is a source file in the langchain codebase, written in python. It belongs to the AgentOrchestration domain, ClassicChains subdomain.
What functions are defined in base.py?
base.py defines 1 function(s): _get_verbosity.
What does base.py depend on?
base.py imports 20 module(s): abc, builtins, contextlib, inspect, json, langchain_classic.base_memory, langchain_classic.globals, langchain_classic.schema, and 12 more.
Where is base.py in the architecture?
base.py is located at libs/langchain/langchain_classic/chains/base.py (domain: AgentOrchestration, subdomain: ClassicChains, directory: libs/langchain/langchain_classic/chains).

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