Dataset loader issue

[Techzist16]

I have used only DIV2K dataset which is stored in the folder named "datasets". The config.py file is changed accordingly.
`from easydict import EasyDict as edict

class Config:
# dataset
DATASET = edict()
DATASET.TYPE = 'MixDataset'
DATASET.DATASETS = ['DIV2K']
DATASET.SPLITS = ['TRAIN']
DATASET.PHASE = 'train'
DATASET.INPUT_HEIGHT = 48
DATASET.INPUT_WIDTH = 48
DATASET.SCALE = 4
DATASET.REPEAT = 1
DATASET.VALUE_RANGE = 255.0
DATASET.SEED = 100`
The init.py is also changed.

 `from easydict import EasyDict as edict
 import importlib
 import os

from utils.common import scandir


dataset_root = os.path.dirname(os.path.abspath(__file__))
print(dataset_root)
dataset_filenames = [
os.path.splitext(os.path.basename(v))[0] for v in scandir(dataset_root)
    if v.endswith('_dataset.py')
 ]
dataset_modules = [
       importlib.import_module(f'datasets.{file_name}')
       for file_name in dataset_filenames
]


class DATASET:
     LEGAL = ['DIV2K', 'Flickr2K', 'Set5', 'Set14', 'BSDS100', 'Urban100', 'Manga109']

# training dataset
DIV2K = edict()
DIV2K.TRAIN = edict()
DIV2K.TRAIN.HRx2 = '/home/BebyGAN/Simple-SR-master/datasets/DIV2K/DIV2K_train_HR_sub'
DIV2K.TRAIN.HRx3 = '/home/BebyGAN/Simple-SR-master/datasets/DIV2K/DIV2K_train_HR_sub'
DIV2K.TRAIN.HRx4 = '/home/BebyGAN/Simple-SR-master/datasets/DIV2K/DIV2K_train_HR_sub'

DIV2K.TRAIN.LRx2 = '/home/BebyGAN/Simple-SR-master/datasets/DIV2K/DIV2K_train_LR_bicubic_sub/X2'
DIV2K.TRAIN.LRx3 = '/home/BebyGAN/Simple-SR-master/datasets/DIV2K/DIV2K_train_LR_bicubic_sub/X3'
DIV2K.TRAIN.LRx4 = '/home/BebyGAN/Simple-SR-master/datasets/DIV2K/DIV2K_train_LR_bicubic_sub/X4'

# testing dataset
Set5 = edict()
Set5.VAL = edict()
Set5.VAL.HRx2 = None
Set5.VAL.HRx3 = None
Set5.VAL.HRx4 = None
Set5.VAL.LRx2 = None
Set5.VAL.LRx3 = None
Set5.VAL.LRx4 = None

Set14 = edict()
Set14.VAL = edict()
Set14.VAL.HRx2 = None
Set14.VAL.HRx3 = None
Set14.VAL.HRx4 = None
Set14.VAL.LRx2 = None
Set14.VAL.LRx3 = None
Set14.VAL.LRx4 = None

BSDS100 = edict()
BSDS100.VAL = edict()
BSDS100.VAL.HRx2 = '/data/liwenbo/datasets/benchmark_SR/BSDS100/HR/modX2'
BSDS100.VAL.HRx3 = '/data/liwenbo/datasets/benchmark_SR/BSDS100/HR/modX3'
BSDS100.VAL.HRx4 = '/data/liwenbo/datasets/benchmark_SR/BSDS100/HR/modX4'
BSDS100.VAL.LRx2 = '/data/liwenbo/datasets/benchmark_SR/BSDS100/LR_bicubic/X2'
BSDS100.VAL.LRx3 = '/data/liwenbo/datasets/benchmark_SR/BSDS100/LR_bicubic/X3'
BSDS100.VAL.LRx4 = '/data/liwenbo/datasets/benchmark_SR/BSDS100/LR_bicubic/X4'

Urban100 = edict()
Urban100.VAL = edict()
Urban100.VAL.HRx2 = None
Urban100.VAL.HRx3 = None
Urban100.VAL.HRx4 = None
Urban100.VAL.LRx2 = None
Urban100.VAL.LRx3 = None
Urban100.VAL.LRx4 = None

Manga109 = edict()
Manga109.VAL = dict()
Manga109.VAL.HRx2 = None
Manga109.VAL.HRx3 = None
Manga109.VAL.HRx4 = None
Manga109.VAL.LRx2 = None
Manga109.VAL.LRx3 = None
Manga109.VAL.LRx4 = None


 def get_dataset(config):
     dataset_type = config.TYPE
     dataset_cls = None
      for module in _dataset_modules:
         dataset_cls = getattr(module, dataset_type, None)
         if dataset_cls is not None:
            break
         if dataset_cls is None:
            raise ValueError(f'Dataset {dataset_type} is not found.')

  hr_paths = []
  lr_paths = []
D = DATASET()

for dataset, split in zip(config.DATASETS, config.SPLITS):
    if dataset not in D.LEGAL or split not in eval('D.%s' % dataset):
        raise ValueError('Illegal dataset.')
    hr_paths.append(eval('D.%s.%s.HRx%d' % (dataset, split, config.SCALE)))
    lr_paths.append(eval('D.%s.%s.LRx%d' % (dataset, split, config.SCALE)))

return dataset_cls(hr_paths, lr_paths, config)`

Traceback (most recent call last):
File "train.py", line 17, in
from dataset import get_dataset
File "/home/BebyGAN/Simple-SR-master/exps/BebyGAN/../../dataset/init.py", line 15
importlib.import_module(f'datasets.{file_name}')
^
SyntaxError: invalid syntax

Please help me on this regards @fenglinglwb

[fenglinglwb]

Are you using a version of python lower than 3.6?

[Techzist16]

Are you using a version of python lower than 3.6?

Yes. I'm using python version 3.5.6

[fenglinglwb]

That's it. Python 3.5.6 doesn't support f-string.

[Techzist16]

That's it. Python 3.5.6 doesn't support f-string.

Which version should I use?

[fenglinglwb]

Python>=3.6

[Techzist16]

I have installed python 3.6.10 version and pytorch version 1.4.0. But I'm getting the following error now:

Traceback (most recent call last):
File "train.py", line 17, in
from dataset import get_dataset
File "/home/BebyGAN/Simple-SR-master/exps/BebyGAN/../../dataset/init.py", line 16, in
for file_name in dataset_filenames
File "/home/BebyGAN/Simple-SR-master/exps/BebyGAN/../../dataset/init.py", line 16, in
for file_name in dataset_filenames
File "/home/anaconda3/envs/Bebygan/lib/python3.6/importlib/init.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
ModuleNotFoundError: No module named 'datasets.mix_dataset'

[fenglinglwb]

Hi, deeply thanks for your attention. But all these errors could be solved by yourself. Please try to get familiar with the code. It will save you a lot of communication time.

[Techzist16]

Hi, deeply thanks for your attention. But all these errors could be solved by yourself. Please try to get familiar with the code. It will save you a lot of communication time.

Thank you very much for your time and consideration. Yes, I'm trying to comprehend the code. I just asked since the error appears to be caused by a version issue.