if code :
text = text.permute(1, 0)

i delete it, at this time I found an error :
TypeError: '<' not supported between instances of 'Example' and 'Example'

is the reason is that if sort_key is not specified, it defers it to the underlying dataset. In the tutorial they used the IMDB dataset, which defines the sort_key to be x.text? if yes, how to specify it manually sir?