"""

Convert filename to a capitalized name.

>>> filename2human_name('bar.py')

'Bar'

>>> filename2human_name('No file-Extension!')

'No File Extension'

>>> filename2human_name('Hör_gut-zu!.aac')

'Hör Gut Zu'

Only file names are allowed, no file path:

>>> filename2human_name('foo/bar.py')

Traceback (most recent call last):

...

AssertionError: Not valid filename: 'foo/bar.py'

"""

assert Path(filename).name == filename, f'Not valid filename: {filename!r}'

txt = filename.partition('.')[0]

txt = slugify(txt, allow_unicode=True)

txt = txt.replace('_', ' ').replace('-', ' ')

txt = ' '.join(word.capitalize() for word in txt.split())

"""

Convert filename to ASCII only via slugify.

>>> clean_filename('bar.py')

'bar.py'

>>> clean_filename('No-Extension!')

'no_extension'

>>> clean_filename('testäöüß!.exe')

'testaou.exe'

>>> clean_filename('nameäöü.extäöü')

'nameaou.extaou'

>>> clean_filename('g/a\\\\rba:g"\\'e.ext')

'g_arba_g__e.ext'

"""

# Strip out path characters

filename = re.sub(r'[/:\"\']', '_', filename)

assert Path(filename).name == filename, f'Invalid filename: {filename!r}'

def convert(txt):

txt = slugify(txt, allow_unicode=False)

return txt.replace('-', '_')

suffix = Path(filename).suffix

if suffix:

filename = filename[:-len(suffix)]

suffix = f'.{convert(suffix)}'

filename = convert(filename)