code: def get_archive_formats():
      """Returns a list of supported formats for archiving and unarchiving.
  
      Each element of the returned sequence is a tuple (name, description)
      """
      formats = [
          (name, registry[2])
          for name, registry in _ARCHIVE_FORMATS.items()
      ]
      formats.sort()
      return formats
  
imports: import os
  import sys
  import stat
  import fnmatch
  import collections
  import errno
label_desc: Use image node_id 27 for calling a global function with example usage: get_archive_formats() and returns: formats