Lowercase and slugify filenames

python-lowercase-filenames

# works with python3 and python2

from slugify import slugify
import os

directory = 'all-lower/'

for old_filename in os.listdir(directory):

    old_filename_pieces = os.path.splitext(old_filename)
    
    #optional: if you only want to change a certain filetype
    #if old_filename_pieces[1] == '.csv':
    
    old_filepath = directory + old_filename
    clean_filename = slugify(old_filename_pieces[0]) + old_filename_pieces[1]
    clean_filepath = directory + clean_filename
    
    os.rename(old_filepath,clean_filepath)