code: def load_extra_data(data_dir="svhn/", one_hot=True):
      extra_filepath = maybe_download(EXTRA_FILE, data_dir)
      extraX, extraY = read_data_from_file(
          extra_filepath, EXTRA_INSTANCES
      )
      return extraX, extraY
  
file_path: tflearn/tflearn/datasets/svhn.py
imports: from __future__ import print_function
  import numpy
  import scipy.io
  from six.moves import urllib
  import os
label_desc: Use image node_id 2 for calling a global function with example usage: load_extra_data(data_dir, one_hot) and returns: extraX,  extraY