code: def patch_os_module():
  	
  	if not hasattr(os, 'symlink'):
  		os.symlink = symlink
  		os.path.islink = islink
  	if not hasattr(os, 'readlink'):
  		os.readlink = readlink
docs: jaraco.windows provides the os.symlink and os.readlink functions.
  	Monkey-patch the os module to include them if not present.