FileNotFoundError: File not found: "data"

Is there an existing issue for this?

• I have searched the existing issues

Bug summary

I have searched issue, there is only one similar issue about file not found path. I followed the guide in that issue, update my torchio and torch, but this error still be there.

Code for reproduction

class iosampler(torch.utils.data.Dataset):
    def __init__(self,input_list,label_list):

        self.input_list=input_list
        self.label_list=label_list
        self.probalities={0:0,19:1,20:1,21:1,22:1,23:1,24:1}
        Subject=[]
        for item1,item2 in zip(self.input_list,self.label_list):
            Subject.append(
                tio.Subject(
                    input=tio.ScalarImage(item1),
                    seg=tio.LabelMap(item2))
            )
        sampler=tio.data.LabelSampler(
            patch_size=128,
            label_probabilities=self.probalities,
        )
        self.training_Set=tio.SubjectsDataset(Subject)
        self.Queue=tio.Queue(
            self.training_Set,
            4,
            4,
            sampler,
            num_workers=8,
            shuffle_subjects=True,
            shuffle_patches=True,
        )

.....
TrainDataset=iosampler(Tr_data_list,Tr_label_list)
DataLoader=torch.utils.data.DataLoader(TrainDataset.Queue,shuffle=True,batch_size=8)

Actual outcome

raise FileNotFoundError(f’File not found: “{path}”') The path value is a posixpath value: data

Error messages

Traceback (most recent call last):**  

  File "../main.py", line 119, in main  
    for i,batch in enumerate(DataLoader):  
  File "../torch/utils/data/dataloader.py", line 530, in __next__  
    data = self._next_data()

  File "../torch/utils/data/dataloader.py", line 570, in _next_data
    data = self._dataset_fetcher.fetch(index)  # may raise StopIteration  

  File "../torch/utils/data/_utils/fetch.py", line 52, in fetch
    return self.collate_fn(data)  

  File "../torch/utils/data/_utils/collate.py", line 157, in default_collate
    return elem_type({key: default_collate([d[key] for d in batch]) for key in elem})  

  File "../torch/utils/data/_utils/collate.py", line 157, in <dictcomp>
    return elem_type({key: default_collate([d[key] for d in batch]) for key in elem})  

  File "../torch/utils/data/_utils/collate.py", line 157, in default_collate
    return elem_type({key: default_collate([d[key] for d in batch]) for key in elem})  

  File "../torchio/data/image.py", line 750, in __init__
    super().__init__(*args, **kwargs)  

  File "../torchio/data/image.py", line 161, in __init__
    self.path = self._parse_path(path)  

  File "../torchio/data/image.py", line 431, in _parse_path
    return [self._parse_single_path(p) for p in path]  

  File "../torchio/data/image.py", line 431, in <listcomp>
    return [self._parse_single_path(p) for p in path]  

  File "../torchio/data/image.py", line 419, in _parse_single_path
    raise FileNotFoundError(f'File not found: "{path}"')  

FileNotFoundError: File not found: "data"

Expected outcome

normal dataloader

System info

Ubuntu: Ubuntu 20.04.3 LTS
torch              1.12.1+cu113
torchaudio         0.12.1+cu113
torchio            0.18.84
torchvision        0.13.1+cu113

[fepegar]

This should be solved in v0.18.86. Thank you both for reporting!

[fepegar]

I was just testing whether the CI would be happy with the changes. Then I thought I give you the chance to contribute. I’ll just make you a co-author of the merge commit, if that’s ok.