code: def get_mtime(dirpath, fname):
      fpath = os.path.join(dirpath, fname)
      return os.stat(fpath).st_mtime
  
file_path: tensorflow/tensorflow/tools/test/upload_test_benchmarks.py
imports: import argparse
  import datetime
  import fcntl
  import json
  import os
  import shutil
  from google.cloud import datastore
label_desc: Use image node_id 2 for calling a global function with example usage: get_mtime(dirpath, fname) and returns: os