code: def _decompress_dist(fname):
      env = os.environ
      if "PADDLE_TRAINERS_NUM" in env and "PADDLE_TRAINER_ID" in env:
          trainer_id = int(env["PADDLE_TRAINER_ID"])
          num_trainers = int(env["PADDLE_TRAINERS_NUM"])
          if num_trainers <= 1:
              _decompress(fname)
          else:
              lock_path = fname + ".decompress.lock"
              from paddle.distributed import ParallelEnv
  
              unique_endpoints = _get_unique_endpoints(
                  ParallelEnv().trainer_endpoints[:]
              )
              # NOTE(dkp): _decompress_dist always performed after
              # _download_dist, in _download_dist sub-trainers is waiting
              # for download lock file release with sleeping, if decompress
              # prograss is very fast and finished with in the sleeping gap
              # time, e.g in tiny dataset such as coco_ce, spine_coco, main
              # trainer may finish decompress and release lock file, so we
              # only craete lock file in main trainer and all sub-trainer
              # wait 1s for main trainer to create lock file, for 1s is
              # twice as sleeping gap, this waiting time can keep all
              # trainer pipeline in order
              # **change this if you have more elegent methods**
              if ParallelEnv().current_endpoint in unique_endpoints:
                  with open(lock_path, "w"):  # touch
                      os.utime(lock_path, None)
                  _decompress(fname)
                  os.remove(lock_path)
              else:
                  time.sleep(1)
                  while os.path.exists(lock_path):
                      time.sleep(0.5)
      else:
          _decompress(fname)
  
imports: import os, sys
  import os.path
  import hashlib
  import requests
  import shutil
  import tqdm
  import time
  import tarfile
  import zipfile
  from paddle.utils.download import _get_unique_endpoints
label_desc: Use image node_id 10 for calling a global function with example usage: _decompress_dist(fname) without return types