Torchtext undefined module when using gpt2bpe tokenizer

[jhudsy]

When trying to use the gpt2bpe tokenizer, I get an error that "module torchtext has no attribute util".

Fixed by adding

import torchtext.utils
import torchtext.transforms

to ludwig/utils/tokenizers.py

[alexsherstinsky]

@jhudsy Would you like to create a pull request with your fix? Thanks a lot.

[mhabedank]

Hi @jhudsy could you try again with torchtext 0.17.2?