There is a typo in your code.

[ljj-cyber]

There is a name error in your code when running, on line 74 of train_transformer_eval.py.
import models2
model_class = getattr(models, model_name)
There is no variable defined as "models"
Thanks for giving help.

[ljj-cyber]

I suppose it is "model_class = getattr(models2, model_name)"

[wongwingtsan]

What is the value of t ?

[huqiulan]

@ljj-cyber Excuse me, have you run this code successfully?