code: def _gpg_cmd():
      gpg_env = os.getenv("GPG_CMD")
      if gpg_env:
          return util.shlex_split(gpg_env)
      return ["gpg", "-d"]
  
imports: import logging
  import os
  import subprocess
  import sys
  from guild import config
  from guild import file_util
  from guild import log
  from guild import remote
  from guild import util
  from guild import var
label_desc: Use image node_id 16 for calling a global function with example usage: _gpg_cmd() and returns: list, util