code: def load_mnist_data():
      if not os.path.exists("mnist.pkl"):
          download_mnist_data()
      with open("mnist.pkl", "rb") as mnist_pickle:
          mnist = six.moves.cPickle.load(mnist_pickle)
      return mnist
  
file_path: tensorboardX/examples/chainer/plain_logger/data.py
imports: import gzip
  import os
  import numpy
  import six
  from six.moves.urllib import request
label_desc: Use image node_id 3 for calling a global function with example usage: load_mnist_data() and returns: mnist