[langchain] document loader

공식 문서

• https://python.langchain.com/docs/introduction/
• https://python.langchain.com/api_reference/community/document_loaders.html
• pytohn, document loader, 파일 확장자별 laoder 정의 표
  • https://python.langchain.com/docs/integrations/document_loaders/

참고

• https://pkgpl.org/2023/10/06/langchain-document-loaders/
• https://wikidocs.net/231564
• https://docs.unstructured.io/welcome

 

이슈

tesseract 설치 중 에러

2025-08-11 06:38:36:ERROR:tesseract is not installed or it's not in your PATH. See README file for more information.
2025-08-11 06:38:36:ERROR:unknown error
[2025-08-11 06:38:36 +0000] [7] [ERROR] Exception in ASGI application
  + Exception Group Traceback (most recent call last):
  |   File "/usr/local/lib/python3.10/site-packages/starlette/_utils.py", line 76, in collapse_excgroups
  |     yield
  |   File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 186, in __call__
  |     async with anyio.create_task_group() as task_group:
  |   File "/usr/local/lib/python3.10/site-packages/anyio/_backends/_asyncio.py", line 767, in __aexit__
  |     raise BaseExceptionGroup(
  | exceptiongroup.ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
  +-+---------------- 1 ----------------
    | Traceback (most recent call last):
    |   File "/usr/local/lib/python3.10/site-packages/uvicorn/protocols/http/h11_impl.py", line 429, in run_asgi
    |     result = await app(  # type: ignore[func-returns-value]
    |   File "/usr/local/lib/python3.10/site-packages/uvicorn/middleware/proxy_headers.py", line 78, in __call__
    |     return await self.app(scope, receive, send)
    |   File "/usr/local/lib/python3.10/site-packages/fastapi/applications.py", line 1054, in __call__
    |     await super().__call__(scope, receive, send)
    |   File "/usr/local/lib/python3.10/site-packages/starlette/applications.py", line 113, in __call__
    |     await self.middleware_stack(scope, receive, send)
    |   File "/usr/local/lib/python3.10/site-packages/starlette/middleware/errors.py", line 187, in __call__
    |     raise exc
    |   File "/usr/local/lib/python3.10/site-packages/starlette/middleware/errors.py", line 165, in __call__
    |     await self.app(scope, receive, _send)
    |   File "/usr/local/lib/python3.10/site-packages/starlette/middleware/cors.py", line 85, in __call__
    |     await self.app(scope, receive, send)
    |   File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 185, in __call__
    |     with collapse_excgroups():
    |   File "/usr/local/lib/python3.10/contextlib.py", line 153, in __exit__
    |     self.gen.throw(typ, value, traceback)
    |   File "/usr/local/lib/python3.10/site-packages/starlette/_utils.py", line 82, in collapse_excgroups
    |     raise exc
    |   File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 187, in __call__
    |     response = await self.dispatch_func(request, call_next)
    |   File "/app/src/middleware/catch_exception_middleware.py", line 12, in catch_unknown_exception_middleware
    |     raise UnknownHttpException()
    | src.exception.http_exceptions.http_exception.UnknownHttpException
    +------------------------------------

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/uvicorn/protocols/http/h11_impl.py", line 429, in run_asgi
    result = await app(  # type: ignore[func-returns-value]
  File "/usr/local/lib/python3.10/site-packages/uvicorn/middleware/proxy_headers.py", line 78, in __call__
    return await self.app(scope, receive, send)
  File "/usr/local/lib/python3.10/site-packages/fastapi/applications.py", line 1054, in __call__
    await super().__call__(scope, receive, send)
  File "/usr/local/lib/python3.10/site-packages/starlette/applications.py", line 113, in __call__
    await self.middleware_stack(scope, receive, send)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/errors.py", line 187, in __call__
    raise exc
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/errors.py", line 165, in __call__
    await self.app(scope, receive, _send)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/cors.py", line 85, in __call__
    await self.app(scope, receive, send)
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 185, in __call__
    with collapse_excgroups():
  File "/usr/local/lib/python3.10/contextlib.py", line 153, in __exit__
    self.gen.throw(typ, value, traceback)
  File "/usr/local/lib/python3.10/site-packages/starlette/_utils.py", line 82, in collapse_excgroups
    raise exc
  File "/usr/local/lib/python3.10/site-packages/starlette/middleware/base.py", line 187, in __call__
    response = await self.dispatch_func(request, call_next)
  File "/app/src/middleware/catch_exception_middleware.py", line 12, in catch_unknown_exception_middleware
    raise UnknownHttpException()
src.exception.http_exceptions.http_exception.UnknownHttpException

 

 

unstructured 모듈

🔎 ModuleNotFoundError: No module named 'unstructured’

• https://stackoverflow.com/questions/75864073/use-of-unstructuredpdfloader-unstructured-package-not-found-please-install-it-w
• https://docs.unstructured.io/open-source/installation/full-installation
• https://github.com/Unstructured-IO/unstructured#installing-the-library

 

그 외

• https://code.visualstudio.com/docs/python/environments
• https://github.com/langchain-ai/langchain/discussions/20023
• tess
  • https://github.com/langchain-ai/langchain/issues/26137
  • https://github.com/langchain-ai/langchain/issues/18379
  • https://kyull-it.tistory.com/11

• 한국어
  • https://teddynote.com/
  • https://wikidocs.net/book/14314
  • https://docs.unstructured.io/open-source/how-to/set-ocr-agent#example-code
  • https://docs.unstructured.io/open-source/core-functionality/partitioning#partition-image
• split
  • https://pkgpl.org/2023/10/06/langchain-document-loaders/