new_contents: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  from __future__ import print_function
  import numpy as np
  from matplotlib import pyplot as plt
  import meta
  from meta import data_filename
  
  
  def display(images, row_n, col_n):
      for i in range(len(images)):
          plt.subplot(row_n, col_n, i + 1)
          pixels = images[i, :].reshape((28, 28))
          plt.imshow(pixels, cmap='gray')
      plt.show()
  
  
  if __name__ == '__main__':
      X_test = np.load(data_filename(meta.TEST_PIXELS_BIN_FILENAME))
      display(X_test[0:100, :], 10, 10)
  
subject: Add visualization