How to use the scandir.scandir_python function in scandir

def setUp(self):
                self.scandir_func = scandir.scandir_python
                self.has_file_attributes = True
                TestMixin.setUp(self)

else:
        tree_dir = os.path.join(os.path.dirname(__file__), 'benchtree')
        if not os.path.exists(tree_dir):
            print('Creating tree at {0}: depth={1}, num_dirs={2}, num_files={3}'.format(
                tree_dir, DEPTH, NUM_DIRS, NUM_FILES))
            create_tree(tree_dir)

    if options.scandir == 'generic':
        scandir.scandir = scandir.scandir_generic
    elif options.scandir == 'c':
        if scandir.scandir_c is None:
            print("ERROR: Compiled C version of scandir not found!")
            sys.exit(1)
        scandir.scandir = scandir.scandir_c
    elif options.scandir == 'python':
        if scandir.scandir_python is None:
            print("ERROR: Python version of scandir not found!")
            sys.exit(1)
        scandir.scandir = scandir.scandir_python
    elif options.scandir == 'os':
        if not hasattr(os, 'scandir'):
            print("ERROR: Python 3.5's os.scandir() not found!")
            sys.exit(1)
        scandir.scandir = os.scandir
    elif hasattr(os, 'scandir'):
        scandir.scandir = os.scandir

    if scandir.scandir == getattr(os, 'scandir', None):
        print("Using Python 3.5's builtin os.scandir()")
    elif scandir.scandir == scandir.scandir_c:
        print('Using fast C version of scandir')
    elif scandir.scandir == scandir.scandir_python:

print('Creating tree at {0}: depth={1}, num_dirs={2}, num_files={3}'.format(
                tree_dir, DEPTH, NUM_DIRS, NUM_FILES))
            create_tree(tree_dir)

    if options.scandir == 'generic':
        scandir.scandir = scandir.scandir_generic
    elif options.scandir == 'c':
        if scandir.scandir_c is None:
            print("ERROR: Compiled C version of scandir not found!")
            sys.exit(1)
        scandir.scandir = scandir.scandir_c
    elif options.scandir == 'python':
        if scandir.scandir_python is None:
            print("ERROR: Python version of scandir not found!")
            sys.exit(1)
        scandir.scandir = scandir.scandir_python
    elif options.scandir == 'os':
        if not hasattr(os, 'scandir'):
            print("ERROR: Python 3.5's os.scandir() not found!")
            sys.exit(1)
        scandir.scandir = os.scandir
    elif hasattr(os, 'scandir'):
        scandir.scandir = os.scandir

    if scandir.scandir == getattr(os, 'scandir', None):
        print("Using Python 3.5's builtin os.scandir()")
    elif scandir.scandir == scandir.scandir_c:
        print('Using fast C version of scandir')
    elif scandir.scandir == scandir.scandir_python:
        print('Using slower ctypes version of scandir')
    elif scandir.scandir == scandir.scandir_generic:
        print('Using very slow generic version of scandir')

if 'posix' == os.name:
    from bleachbit.General import WindowsError
    pywinerror = WindowsError

try:
    from scandir import walk
    if 'nt' == os.name:
        import scandir
        import bleachbit.Windows

        class _Win32DirEntryPython(scandir.Win32DirEntryPython):
            def is_symlink(self):
                return super(_Win32DirEntryPython, self).is_symlink() or bleachbit.Windows.is_junction(self.path)

        scandir.scandir = scandir.scandir_python
        scandir.DirEntry = scandir.Win32DirEntryPython = _Win32DirEntryPython
except ImportError:
    logger.warning(
        'scandir is not available, so falling back to slower os.walk()')
    from os import walk


def open_files_linux():
    return glob.iglob("/proc/*/fd/*")


def open_files_lsof(run_lsof=None):
    if run_lsof is None:
        def run_lsof():
            return subprocess.check_output(["lsof", "-Fn", "-n"])
    for f in run_lsof().split("\n"):