Rename every file to the name of its parent folder

rename_files_to_foldername.py

#!/usr/bin/env python3
# import shutil
import os
import sys
import re
from shutil import copyfile

dr  = str(sys.argv[1])
ext = str(sys.argv[2])
dest = str(sys.argv[3])


DIR_SEP = '\\' if os.name == 'nt' else '/'

# print(dr, list(os.walk(dr)))

for root, dirs, files in os.walk(dr):
    for file in files:
        # print(file)
        # print(root, f"{dr}{DIR_SEP}*{DIR_SEP}*", file, re.compile(f"{dr}{DIR_SEP}*{DIR_SEP}*").match(root))
        # re.match(f"{dr}{DIR_SEP}*{DIR_SEP}*", root) and 
        if file.lower().endswith(ext):
            spl = root.split(DIR_SEP); newname = spl[-1]; sup = (DIR_SEP).join(spl[:-1])
            print('>', root, root+DIR_SEP+file, f'{dest}{DIR_SEP}{newname}.{ext}')
            copyfile(f'{root}{DIR_SEP}{file}', f'{dest}{DIR_SEP}{newname}.{ext}')
            # ; shutil.rmtree(root)