class_docstr: The implement of DialogReader.
docstr: Gets progress for training phase.
docstr_tok: ["Gets","progress","for","training","phase","."]
code: def get_train_progress(self):
      """Gets progress for training phase."""
      return (
          self.current_epoch,
          self.current_file_index,
          self.total_file,
      )
  
imports: import csv
  from collections import namedtuple
  from contextlib import contextmanager
  import gzip
  import numpy
  from ..utils import pad_batch_data
  from ..utils.args import str2bool
  from ..utils.masking import mask
  from ..utils import tokenization
label_desc: Use image node_id 3 for calling the DialogReader obj's underlying member method code with example usage: obj.get_train_progress() and returns: self,  self,  self