code: def walk(top, in_order=True):
      """Recursive directory tree generator for directories.
  
      Args:
        top: string, a Directory name
        in_order: bool, Traverse in order if True, post order if False.  Errors that
          happen while listing directories are ignored.
  
      Yields:
        Each yield is a 3-tuple:  the pathname of a directory, followed by lists of
        all its subdirectories and leaf files. That is, each yield looks like:
        `(dirname, [subdirname, subdirname, ...], [filename, filename, ...])`.
        Each item is a string.
      """
      return walk_v2(top, in_order)
  
imports: import binascii
  import os
  from posixpath import join
  import uuid
  import six
  from tensorflow.python.framework import errors
  from tensorflow.python.lib.io import _pywrap_file_io
  from tensorflow.python.util import compat
  from tensorflow.python.util import deprecation
  from tensorflow.python.util.tf_export import tf_export
label_desc: Use image node_id 26 for calling a global function with example usage: walk(top, in_order) and returns: walk_v2