Re-implementation of os.walk as a recursive generator

WalkDirGenerator.py

"""
Re-implementation of os.walk as a recursive generator.
Yields full paths of files encountered along the walk of the parent directory.

"""

import os

def walkDir(parent):
  """
  Walks parent directory yielding files along the way.
  
  Args:
      parent (str): Path of parent directory to begin walk at.
  
  Yields:
      Paths of files encountered along the way.
      
  """
	contents = os.listdir(parent)

	for node in contents:
		path = os.path.join(parent, node)
		if os.path.isdir(path):
			for sub_dir in walkDir(path):
				yield sub_dir
		else:
			yield path