viparse-langchain

LangChain integration for viparse — read Vietnamese documents, including files written in the pre-Unicode TCVN3 / VNI / VISCII / VPS encodings that generic loaders return as B¸o c¸o tµi chÝnh.

pip install viparse-langchain

from viparse_langchain import VietnameseDocumentLoader

docs = VietnameseDocumentLoader("bao_cao_cu.doc").load()

Takes the same options as viparse.load() — encoding, ocr, output, chunk — and streams rather than materialising a whole document first.

What it is

A thin, deliberately empty package. The code lives in viparse.integrations and ships with pip install "viparse[langchain]"; this distribution exists so that a LangChain user can find it, because LangChain no longer accepts third-party integrations into its own repositories.

Why not langchain-viparse

That prefix belongs to LangChain's own packages. Using it would imply an official integration that does not exist, and a PyPI name cannot be given back.

Accuracy

0.986 diacritic accuracy over 96 hand-transcribed Vietnamese government documents, against 0.019 for the same reader with conversion switched off — same documents, same published command, one flag apart. The corpus, the metric and every raw result are public, including a written account of the ways the number is weaker than it looks.

MIT © 2026 Đinh Minh Trí (Kayden)