class_docstr: The class to read the Ubuntu V2 dataset from csv files.
  
  Please, see https://github.com/rkadlec/ubuntu-ranking-dataset-creator.
class_docstr_tok: ["The","class","to","read","the","Ubuntu","V2","dataset","from","csv","files",".","Please",",","see","https",":","\/\/github.com\/rkadlec\/ubuntu-ranking-dataset-creator","."]
code: def preprocess_data_validation(
      self, fname: Union[Path, str]
  ) -> List[Tuple[List[str], int]]:
      contexts = []
      responses = []
      with open(fname, "r") as f:
          reader = csv.reader(f)
          next(reader)
          for el in reader:
              contexts.append(el[0])
              responses.append(el[1:])
      data = [[el[0]] + el[1] for el in zip(contexts, responses)]
      data = [(el, 1) for el in data]
      return data
  
file_path: DeepPavlov/deeppavlov/dataset_readers/ubuntu_v2_reader.py
imports: import csv
  from pathlib import Path
  from typing import List, Dict, Tuple, Union
  from deeppavlov.core.commands.utils import expand_path
  from deeppavlov.core.common.registry import register
  from deeppavlov.core.data.dataset_reader import DatasetReader
label_desc: Use image node_id 3 for calling the UbuntuV2Reader obj's underlying member method code with example usage: obj.preprocess_data_validation(fname) and returns: data