AttributeError: C

[rangehow]

Checked other resources

• [X] I added a very descriptive title to this issue.
• [X] I searched the LangChain documentation with the integrated search.
• [X] I used the GitHub search to find a similar question and didn't find it.
• [X] I am sure that this is a bug in LangChain rather than my code.

Example Code

from langchain_community.document_loaders import JSONLoader

Error Message and Stack Trace (if applicable)

When I want to use 'https://python.langchain.com/docs/integrations/retrievers/bm25', as the snippet from langchain.retrievers import BM25Retriever , an error throwed that hint user to use pip install -U langchain_community. I did it as mentioned. But I found that JSONLoader cannot be load and the error message is very short. I have to dive into the code and found that after langchian_community updated, jsonloader support c language which is a dict contained in langchian without 'c'

LANGUAGE_EXTENSIONS: Dict[str, str] = {
        "py": Language.PYTHON,
        "js": Language.JS,
        "cobol": Language.COBOL,
        "cpp": Language.CPP,
        "cs": Language.CSHARP,
        "rb": Language.RUBY,
        "scala": Language.SCALA,
        "rs": Language.RUST,
        "go": Language.GO,
        "kt": Language.KOTLIN,
        "lua": Language.LUA,
        "pl": Language.PERL,
        "ts": Language.TS,
        "java": Language.JAVA,
    }

so the title issue appear. After update langchain, this issue solved.

Description

I have two suggestion that: 1.Consider updating the outdated BM25 document. 2 The issue caused by inconsistent versions should not be addressed so briefly. Consider providing a more specific prompt or including the appropriate version of LangChain in the requirements of LangChain_Community.

System Info

The issue will appear in langchian 0.1.7 and community 0.0.21 / while 0.1.8+0.0.21 is ok

[rocke2020]

the same error

[urbanscribe]

same

[QuynhTaVo]

same

[gfhayworth]

changing my import statements resolved the issue.

from langchain.retrievers.ensemble import EnsembleRetriever
from langchain_community.retrievers.bm25 import BM25Retriever

it seems the example https://python.langchain.com/docs/modules/data_connection/retrievers/ensemble needs to be updated with this change

[yesidc]

Updating the package did the trick for me