Mass filename changer (using regex, case sensitivity included)

mass_filename_changer.py

from functools import partial
from pathlib import Path
import re
 
 
REGEX_REPLACE = 'cow'
PATH = r'C:\Users\Yam'
DRY = False
 
 
def change_filename(before: Path, after: Path, dry: bool) -> bool:
    if before != after:
        print(f"{before} -> {after}")
        if not dry:
            before.rename(after)
            return True
    return False
 
 
def remove_from_filename(
    to_remove: str,
    filepath: Path,
    case_sensitive: bool = False,
    dry: bool = False,
) -> bool:
    flags = 0 if case_sensitive else re.IGNORECASE
    replacer = re.compile(f'{to_remove}', flags)
    new_path = filepath.parent / replacer.sub('', filepath.name)
    return change_filename(filepath, new_path, dry)
 
 
remove_regex_from_filename = partial(remove_from_filename, REGEX_REPLACE)
files = Path(PATH).glob('*')
count = sum(remove_regex_from_filename(file) for file in files)
print(f"Total of {count} file changed.")