TypeError: 'range' object is not callable

[Nikhil-Rao20]

I am getting an unkown error, while iterating through my data generator. I have followed the same instructions provided. I am using the PASCAL VOC 2012.

1. This is a sample of annotation files :

/content/VOC2012_train_val/VOC2012_train_val/JPEGImages/2010_004120.jpg 23,107,493,330,8
/content/VOC2012_train_val/VOC2012_train_val/JPEGImages/2008_001742.jpg 40,99,154,375,15
/content/VOC2012_train_val/VOC2012_train_val/JPEGImages/2011_001669.jpg 331,240,359,259,7
/content/VOC2012_train_val/VOC2012_train_val/JPEGImages/2007_007161.jpg 5,57,332,500,15
/content/VOC2012_train_val/VOC2012_train_val/JPEGImages/2012_002212.jpg 76,7,283,404,15
/content/VOC2012_train_val/VOC2012_train_val/JPEGImages/2010_004807.jpg 45,122,400,341,12 234,47,467,167,12
/content/VOC2012_train_val/VOC2012_train_val/JPEGImages/2011_004769.jpg 159,95,292,436,15
/content/VOC2012_train_val/VOC2012_train_val/JPEGImages/2009_001013.jpg 144,24,243,258,15 35,88,377,362,13
/content/VOC2012_train_val/VOC2012_train_val/JPEGImages/2012_003165.jpg 194,192,275,471,15

2. This is how i read the annotations files :

with open('/content/2012_train.txt', encoding='utf-8') as f:
    train_lines = f.readlines()
with open( '/content/2012_val.txt', encoding='utf-8') as f:
    val_lines   = f.readlines()

1. I have used the YoloDataset from the repo itself , all same
2. This is my generators declaration :

gen             = DataLoader(train_dataset, shuffle = shuffle, batch_size = batch_size, num_workers = num_workers, pin_memory=True,drop_last=True, collate_fn=yolo_dataset_collate, sampler=train_sampler, worker_init_fn=partial(worker_init_fn, rank=rank, seed=seed))
gen_val         = DataLoader(val_dataset  , shuffle = shuffle, batch_size = batch_size, num_workers = num_workers, pin_memory=True, drop_last=True, collate_fn=yolo_dataset_collate, sampler=val_sampler, worker_init_fn=partial(worker_init_fn, rank=rank, seed=seed))

1. And I am running this code (to see my images and boxes in gen):

for img2, box2 in gen_val:
  img=img2
  box=box2
  break

And there I get the following error :

Error :

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
[<ipython-input-83-5f541636a18e>](https://localhost:8080/#) in <cell line: 1>()
----> 1 for img2, box2 in gen_val:
      2   img=img2
      3   box=box2
      4   break

3 frames
[/usr/local/lib/python3.10/dist-packages/torch/utils/data/dataloader.py](https://localhost:8080/#) in __next__(self)
    628                 # TODO(https://github.com/pytorch/pytorch/issues/76750)
    629                 self._reset()  # type: ignore[call-arg]
--> 630             data = self._next_data()
    631             self._num_yielded += 1
    632             if self._dataset_kind == _DatasetKind.Iterable and \

[/usr/local/lib/python3.10/dist-packages/torch/utils/data/dataloader.py](https://localhost:8080/#) in _next_data(self)
   1342             else:
   1343                 del self._task_info[idx]
-> 1344                 return self._process_data(data)
   1345 
   1346     def _try_put_index(self):

[/usr/local/lib/python3.10/dist-packages/torch/utils/data/dataloader.py](https://localhost:8080/#) in _process_data(self, data)
   1368         self._try_put_index()
   1369         if isinstance(data, ExceptionWrapper):
-> 1370             data.reraise()
   1371         return data
   1372 

[/usr/local/lib/python3.10/dist-packages/torch/_utils.py](https://localhost:8080/#) in reraise(self)
    704             # instantiate since we don't know how to
    705             raise RuntimeError(msg) from None
--> 706         raise exception
    707 
    708 

TypeError: Caught TypeError in DataLoader worker process 0.
Original Traceback (most recent call last):
  File "/usr/local/lib/python3.10/dist-packages/torch/utils/data/_utils/worker.py", line 309, in _worker_loop
    data = fetcher.fetch(index)  # type: ignore[possibly-undefined]
  File "/usr/local/lib/python3.10/dist-packages/torch/utils/data/_utils/fetch.py", line 52, in fetch
    data = [self.dataset[idx] for idx in possibly_batched_index]
  File "/usr/local/lib/python3.10/dist-packages/torch/utils/data/_utils/fetch.py", line 52, in <listcomp>
    data = [self.dataset[idx] for idx in possibly_batched_index]
  File "<ipython-input-61-b6184597b9a6>", line 49, in __getitem__
    image, box      = self.get_random_data(self.annotation_lines[index], self.input_shape, random = self.train)
  File "<ipython-input-61-b6184597b9a6>", line 100, in get_random_data
    box     = np.array([np.array(list(map(int,box.split(',')))) for box in line[1:]])
  File "<ipython-input-61-b6184597b9a6>", line 100, in <listcomp>
    box     = np.array([np.array(list(map(int,box.split(',')))) for box in line[1:]])
TypeError: 'range' object is not callable

I need guidance over this and help me to solve this issue.