code: def _backup_init_script(init_script):
      if os.path.exists(init_script):
          backup = _init_script_backup(init_script)
          cli.out(
              f"Backing up {util.format_dir(init_script)} to {util.format_dir(backup)}",
              err=True,
          )
          shutil.copy(init_script, backup)
  
imports: import glob
  import logging
  import os
  import shutil
  import sys
  import guild
  from guild import cli
  from guild import config
  from guild import util
label_desc: Use image node_id 12 for calling a global function with example usage: _backup_init_script(init_script) without return types