code: def parse_index_file(filename):
      """Parse index file."""
      index = []
      for line in open(filename):
          index.append(int(line.strip()))
      return index
  
file_path: OpenNE/src/openne/gcn/utils.py
imports: import numpy
  import pickle
  import networkx
  import scipy.sparse
  from scipy.sparse.linalg.eigen.arpack import eigsh
  import sys
label_desc: Use image node_id 1 for calling a global function with example usage: parse_index_file(filename) and returns: index