old_contents: """ Dataset module implements Dataset, DatasetIndex, Preprocess and Batch classes"""
  
  from .base import Baseset
  from .batch import Batch, ArrayBatch, DataFrameBatch
  from .dataset import Dataset
  from .jointdataset import JointDataset, FullDataset
  from .dsindex import DatasetIndex, FilesIndex
  from .preprocess import Preprocessing, action
  
new_contents: """ Dataset module implements Dataset, DatasetIndex, Preprocess and Batch classes"""
  import sys
  if sys.version_info < (3, 4):
  	raise ImportError("Dataset module requires Python 3.4 or higher")
  
  from .base import Baseset
  from .batch import Batch, ArrayBatch, DataFrameBatch
  from .dataset import Dataset
  from .jointdataset import JointDataset, FullDataset
  from .dsindex import DatasetIndex, FilesIndex
  from .preprocess import Preprocessing, action
  
subject: Check python version