code: def readlines(filename):
      """Read all the lines in a text file and return as a list"""
      with open(filename, "r") as f:
          lines = f.read().splitlines()
      return lines
  
file_path: gluon-cv/gluoncv/data/kitti/kitti_utils.py
imports: from __future__ import absolute_import, division, print_function
  import os
  from collections import Counter
  import numpy
  import mxnet
label_desc: Use image node_id 6 for calling a global function with example usage: readlines(filename) and returns: lines