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loading.py — langchain Source File

Architecture documentation for loading.py, a python file in the langchain codebase. 14 imports, 0 dependents.

File python CoreAbstractions RunnableInterface 14 imports 5 functions 1 classes

Entity Profile

Dependency Diagram

graph LR
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab["loading.py"]
  cfe2bde5_180e_e3b0_df2b_55b3ebaca8e7["collections.abc"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> cfe2bde5_180e_e3b0_df2b_55b3ebaca8e7
  8e2034b7_ceb8_963f_29fc_2ea6b50ef9b3["typing"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> 8e2034b7_ceb8_963f_29fc_2ea6b50ef9b3
  b19a8b7e_fbee_95b1_65b8_509a1ed3cad7["langchain_core._api"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> b19a8b7e_fbee_95b1_65b8_509a1ed3cad7
  ba43b74d_3099_7e1c_aac3_cf594720469e["langchain_core.language_models"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> ba43b74d_3099_7e1c_aac3_cf594720469e
  e6b4f61e_7b98_6666_3641_26b069517d4a["langchain_core.prompts"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> e6b4f61e_7b98_6666_3641_26b069517d4a
  a0d4f6c3_2d96_364c_720a_e778ffd171a0["langchain_classic.chains.combine_documents.base"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> a0d4f6c3_2d96_364c_720a_e778ffd171a0
  6d71bcfe_5d92_7e40_c7e2_fcdbf7baf6b1["langchain_classic.chains.combine_documents.map_reduce"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> 6d71bcfe_5d92_7e40_c7e2_fcdbf7baf6b1
  79156da2_e724_3283_1bf7_b4549775b347["langchain_classic.chains.combine_documents.map_rerank"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> 79156da2_e724_3283_1bf7_b4549775b347
  08fdda1e_c6d5_47d2_b46f_81d1fd43aef1["langchain_classic.chains.combine_documents.reduce"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> 08fdda1e_c6d5_47d2_b46f_81d1fd43aef1
  8ee8a976_803a_5da1_9bc4_533b3c16afb3["langchain_classic.chains.combine_documents.refine"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> 8ee8a976_803a_5da1_9bc4_533b3c16afb3
  2bdb44fe_f0bd_1fb7_7a70_02295a883921["langchain_classic.chains.combine_documents.stuff"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> 2bdb44fe_f0bd_1fb7_7a70_02295a883921
  31974615_0d58_bd26_13f1_776e0a9d1413["langchain_classic.chains.llm"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> 31974615_0d58_bd26_13f1_776e0a9d1413
  43b22ac3_b13e_4978_a85f_5df267337b85["langchain_classic.chains.qa_with_sources"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> 43b22ac3_b13e_4978_a85f_5df267337b85
  7b0ef98a_7b5d_69d9_a0d7_4eed20430de2["langchain_classic.chains.question_answering.map_rerank_prompt"]
  c98754f4_1e5f_d02f_7c56_8b0ca0dbacab --> 7b0ef98a_7b5d_69d9_a0d7_4eed20430de2
  style c98754f4_1e5f_d02f_7c56_8b0ca0dbacab fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

"""Load question answering with sources chains."""

from __future__ import annotations

from collections.abc import Mapping
from typing import Any, Protocol

from langchain_core._api import deprecated
from langchain_core.language_models import BaseLanguageModel
from langchain_core.prompts import BasePromptTemplate

from langchain_classic.chains.combine_documents.base import BaseCombineDocumentsChain
from langchain_classic.chains.combine_documents.map_reduce import (
    MapReduceDocumentsChain,
)
from langchain_classic.chains.combine_documents.map_rerank import (
    MapRerankDocumentsChain,
)
from langchain_classic.chains.combine_documents.reduce import ReduceDocumentsChain
from langchain_classic.chains.combine_documents.refine import RefineDocumentsChain
from langchain_classic.chains.combine_documents.stuff import StuffDocumentsChain
from langchain_classic.chains.llm import LLMChain
from langchain_classic.chains.qa_with_sources import (
    map_reduce_prompt,
    refine_prompts,
    stuff_prompt,
)
from langchain_classic.chains.question_answering.map_rerank_prompt import (
    PROMPT as MAP_RERANK_PROMPT,
)


class LoadingCallable(Protocol):
    """Interface for loading the combine documents chain."""

    def __call__(
        self,
        llm: BaseLanguageModel,
        **kwargs: Any,
    ) -> BaseCombineDocumentsChain:
        """Callable to load the combine documents chain."""


def _load_map_rerank_chain(
    llm: BaseLanguageModel,
    *,
    prompt: BasePromptTemplate = MAP_RERANK_PROMPT,
    verbose: bool = False,
    document_variable_name: str = "context",
    rank_key: str = "score",
    answer_key: str = "answer",
    **kwargs: Any,
) -> MapRerankDocumentsChain:
    llm_chain = LLMChain(llm=llm, prompt=prompt, verbose=verbose)
    return MapRerankDocumentsChain(
        llm_chain=llm_chain,
        rank_key=rank_key,
        answer_key=answer_key,
        document_variable_name=document_variable_name,
        **kwargs,
// ... (155 more lines)

Domain

Subdomains

Functions

Classes

Dependencies

  • collections.abc
  • langchain_classic.chains.combine_documents.base
  • langchain_classic.chains.combine_documents.map_reduce
  • langchain_classic.chains.combine_documents.map_rerank
  • langchain_classic.chains.combine_documents.reduce
  • langchain_classic.chains.combine_documents.refine
  • langchain_classic.chains.combine_documents.stuff
  • langchain_classic.chains.llm
  • langchain_classic.chains.qa_with_sources
  • langchain_classic.chains.question_answering.map_rerank_prompt
  • langchain_core._api
  • langchain_core.language_models
  • langchain_core.prompts
  • typing

Source

Frequently Asked Questions

What does loading.py do?
loading.py is a source file in the langchain codebase, written in python. It belongs to the CoreAbstractions domain, RunnableInterface subdomain.
What functions are defined in loading.py?
loading.py defines 5 function(s): _load_map_reduce_chain, _load_map_rerank_chain, _load_refine_chain, _load_stuff_chain, load_qa_with_sources_chain.
What does loading.py depend on?
loading.py imports 14 module(s): collections.abc, langchain_classic.chains.combine_documents.base, langchain_classic.chains.combine_documents.map_reduce, langchain_classic.chains.combine_documents.map_rerank, langchain_classic.chains.combine_documents.reduce, langchain_classic.chains.combine_documents.refine, langchain_classic.chains.combine_documents.stuff, langchain_classic.chains.llm, and 6 more.
Where is loading.py in the architecture?
loading.py is located at libs/langchain/langchain_classic/chains/qa_with_sources/loading.py (domain: CoreAbstractions, subdomain: RunnableInterface, directory: libs/langchain/langchain_classic/chains/qa_with_sources).

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