code: def read_pairs(pairs_filename):
      pairs = []
      with open(pairs_filename, "r") as f:
          for line in f.readlines()[1:]:
              pair = line.strip().split()
              pairs.append(pair)
      return np.array(pairs)
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import numpy
  from scipy import misc
  from sklearn.model_selection import KFold
  from scipy import interpolate
  import sklearn
  from sklearn.decomposition import PCA
  import mxnet
  from mxnet import ndarray
label_desc: Use image node_id 7 for calling a global function with example usage: read_pairs(pairs_filename) and returns: np