RuntimeError: expected a non-empty list of Tensors

1

I am trying to develop a gesture recognition system using deep learning in pytorch.
I get the following error .

data = torch.cat(imgs,dim=1)
RuntimeError: expected a non-empty list of Tensors

Could anyone help on this?
Thanks!

2

Is imgs an empty list? Print it out with print(imgs)

3

Yes imgs is an empty list.

So what can be done?

4

What are you trying to do? What should data be?

5

Ran into this myself today. I guess id like it to create an empty tensor, but maybe that’s problematic. Will just do an if else I guess. Anyone got a prettier solution than

if list_of_tensors:
    t = torch.stack(list_of_tensors)
else
    t = torch.tensor([])