class_docstr: Base class for data converters for sequence classification data sets.
docstr: Reads a tab separated value file.
docstr_tok: ["Reads","a","tab","separated","value","file","."]
code: def _read_tsv(cls, input_file, quotechar=None):
      """Reads a tab separated value file."""
      with tf.gfile.Open(input_file, "r") as f:
          reader = csv.reader(f, delimiter="\t", quotechar=quotechar)
          lines = []
          for line in reader:
              lines.append(line)
      return lines
  
imports: import os
  import csv
  import collections
  import tensorflow
  import texar.tf
label_desc: Use image node_id 5 for calling the DataProcessor obj's underlying member method code with example usage: obj._read_tsv(cls, input_file, quotechar) and returns: lines