When using the train_ucf101.py file for model training, the model evaluation part cannot enter the loop.

[LiYe1229]

Traceback (most recent call last):
File "train_ucf101.py", line 146, in
train_model(sym_net=net, **kwargs)
File "/PyTorch-MFNet/train_model.py", line 117, in train_model
epoch_end=end_epoch,)
File "/PyTorch-MFNet/train/model.py", line 328, in fit
self.callback_kwargs['sample_elapse'] = sum_sample_elapse / sum_sample_inst
ZeroDivisionError: float division by zero

The error content is as above. When I use the train_ucf101.py file for model training, the loop of the model evaluation part in the /train/model.py file cannot enter, resulting in the sum_sample_inst parameter being zero, and subsequent division operations report an error. I checked the loop body content and The data set reads part of the code and found that all variables have corresponding values. How can I modify the code to make the error disappear?

[liuhui0401]

I think you should check out your evaluation dataloader. It may be empty.