Building applications with LLMs through composability
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Louis Auneau 0b532a4ed0
community: Azure Document Intelligence parser features not available fixed (#30370)
Thank you for contributing to LangChain!

- **Description:** Azure Document Intelligence OCR solution has a
*feature* parameter that enables some features such as high-resolution
document analysis, key-value pairs extraction, ... In langchain parser,
you could be provided as a `analysis_feature` parameter to the
constructor that was passed on the `DocumentIntelligenceClient`.
However, according to the `DocumentIntelligenceClient` [API
Reference](https://learn.microsoft.com/en-us/python/api/azure-ai-documentintelligence/azure.ai.documentintelligence.documentintelligenceclient?view=azure-python),
this is not a valid constructor parameter. It was therefore remove and
instead stored as a parser property that is used in the
`begin_analyze_document`'s `features` parameter (see [API
Reference](https://learn.microsoft.com/en-us/python/api/azure-ai-formrecognizer/azure.ai.formrecognizer.documentanalysisclient?view=azure-python#azure-ai-formrecognizer-documentanalysisclient-begin-analyze-document)).
I also removed the check for "Supported features" since all features are
supported out-of-the-box. Also I did not check if the provided `str`
actually corresponds to the Azure package enumeration of features, since
the `ValueError` when creating the enumeration object is pretty
explicit.
Last caveat, is that some features are not supported for some kind of
documents. This is documented inside Microsoft documentation and
exception are also explicit.
- **Issue:** N/A
- **Dependencies:** No
- **Twitter handle:** @Louis___A

---------

Co-authored-by: Louis Auneau <louis@handshakehealth.co>
2025-03-26 14:40:14 -04:00
.devcontainer community[minor]: Add ApertureDB as a vectorstore (#24088) 2024-07-16 09:32:59 -07:00
.github infra(GHA): description is required based on schema definition (#30305) 2025-03-17 18:42:42 +00:00
cookbook Docs: Fix typo in cookbook (#30485) 2025-03-25 18:15:29 -04:00
docs docs: hide jsx in llm chain tutorial (#30187) 2025-03-26 14:22:33 -04:00
libs community: Azure Document Intelligence parser features not available fixed (#30370) 2025-03-26 14:40:14 -04:00
scripts
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.gitignore infra: gitignore api_ref mds (#25705) 2024-08-23 09:50:30 -07:00
.pre-commit-config.yaml docs: fix builds (#29890) 2025-02-19 13:35:59 -05:00
.readthedocs.yaml docs(readthedocs): streamline config (#30307) 2025-03-18 11:47:45 -04:00
CITATION.cff
LICENSE
Makefile langchain: clean pyproject ruff section (#30070) 2025-03-09 15:06:02 -04:00
MIGRATE.md Proofreading and Editing Report for Migration Guide (#28084) 2024-11-13 11:03:09 -05:00
poetry.toml multiple: use modern installer in poetry (#23998) 2024-07-08 18:50:48 -07:00
pyproject.toml langchain: clean pyproject ruff section (#30070) 2025-03-09 15:06:02 -04:00
README.md docs: update readme (#30239) 2025-03-12 13:45:13 -04:00
SECURITY.md docs: single security doc (#28515) 2024-12-04 18:15:34 +00:00
uv.lock openai[patch]: support Responses API (#30231) 2025-03-12 12:25:46 -04:00
yarn.lock box: add langchain box package and DocumentLoader (#25506) 2024-08-21 02:23:43 +00:00

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Note

Looking for the JS/TS library? Check out LangChain.js.

LangChain is a framework for building LLM-powered applications. It helps you chain together interoperable components and third-party integrations to simplify AI application development — all while future-proofing decisions as the underlying technology evolves.

pip install -U langchain

To learn more about LangChain, check out the docs. If youre looking for more advanced customization or agent orchestration, check out LangGraph, our framework for building controllable agent workflows.

Why use LangChain?

LangChain helps developers build applications powered by LLMs through a standard interface for models, embeddings, vector stores, and more.

Use LangChain for:

  • Real-time data augmentation. Easily connect LLMs to diverse data sources and external / internal systems, drawing from LangChains vast library of integrations with model providers, tools, vector stores, retrievers, and more.
  • Model interoperability. Swap models in and out as your engineering team experiments to find the best choice for your applications needs. As the industry frontier evolves, adapt quickly — LangChains abstractions keep you moving without losing momentum.

LangChains ecosystem

While the LangChain framework can be used standalone, it also integrates seamlessly with any LangChain product, giving developers a full suite of tools when building LLM applications.

To improve your LLM application development, pair LangChain with:

  • LangSmith - Helpful for agent evals and observability. Debug poor-performing LLM app runs, evaluate agent trajectories, gain visibility in production, and improve performance over time.
  • LangGraph - Build agents that can reliably handle complex tasks with LangGraph, our low-level agent orchestration framework. LangGraph offers customizable architecture, long-term memory, and human-in-the-loop workflows — and is trusted in production by companies like LinkedIn, Uber, Klarna, and GitLab.
  • LangGraph Platform - Deploy and scale agents effortlessly with a purpose-built deployment platform for long running, stateful workflows. Discover, reuse, configure, and share agents across teams — and iterate quickly with visual prototyping in LangGraph Studio.

Additional resources

  • Tutorials: Simple walkthroughs with guided examples on getting started with LangChain.
  • How-to Guides: Quick, actionable code snippets for topics such as tool calling, RAG use cases, and more.
  • Conceptual Guides: Explanations of key concepts behind the LangChain framework.
  • API Reference: Detailed reference on navigating base packages and integrations for LangChain.