ImportError: cannot import name 'DenseRetriever' from 'haystack.nodes.retriever'

[gavirapp]

[Zaker237]

hallo,
what will be the purpose of importing the DenseRetriever??
as far as i know the DenseRetriever is just an interface and it has not implementatio but there is a DensePassageRetrieval component that you can import and use.

[gavirapp]

As you can see, I am not trying to import DenseRetriever, but importing "convert_files_to_docs" gets tripped with this error. I had this working a couple of weeks ago (I converted MS Word documents to text successfully) but now I can't do it anymore:( This is part of the "Better Retrieval via “Embedding Retrieval” tutorial.

Thanks.

-George

[TuanaCelik]

Hey @gavirapp this looks odd indeed.. How are you installing Haystack before this? And any chance you can share any previous imports you might have before this one? On a colab, installing haystack and just having that import line with a clean slate works fine for me but let's see if there's something you're importing before that causes this for some reason..

[gavirapp]

%%bash

pip install --upgrade pip
pip install git+https://github.com/deepset-ai/haystack.git

[TuanaCelik]

@gavirapp - I'm unable to re-produce this issue. If it's a public colab you can share with me maybe I can have a look there?

[lifsys]

@gavirapp Same issue here... any luck? I am using a local notebook (juypterlab).