ImportError

[huangjy-pku]

Hello, I followed the instructions in huggingface to use OFA model, but it turned out to be an surprising error saying:
ImportError: cannot import name 'OFAModel' from 'transformers'.

I guess it is because I didn't install the customized version of transformers right, which should have incorporated OFAModel and OFATokenizer. But I have not done anything apart from your instructions:

git clone --single-branch --branch feature/add_transformers https://github.com/OFA-Sys/OFA.git
pip install OFA/transformers/

Could you please help me figure it out why this happens? Is there something I miss in the preparation steps?

[JustinLin610]

Maybe you should uninstall the transformers and follow our instructions to install the customized one? Or you can try with the colab notebook for comparison

[huangjy-pku]

I did uninstall and re-install transformers. But it kept the same failure. I would check your colab notebook. Could you tell me where it is?

[sarath-mutnuru]

https://github.com/OFA-Sys/OFA/blob/main/colab.md

[huangjy-pku]

Sorry, I mean, the huggingface version, rather than fairseq version. And as said in instructions, it is about the add_transformers branch of the repo.

[huangjy-pku]

I just figured it out. It is because the dependency on DL framework (e.g., PyTorch) when using transformers. Thanks anyway :) Closing.