code: def unlock(fd):
      fcntl.flock(fd, fcntl.LOCK_UN)
  
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 5 for calling a global function with example usage: unlock(fd) without return types