Removes all .DS_Store and ._* files from the current folder and all sub-folders.

clean-drive.py

#! /usr/bin/env python3
import os
import re


def get_items(dir):
    dirs = []
    files = []
    with os.scandir(dir) as scan:
        for entry in scan:
            if entry.is_file():
                files.append((entry.name, entry.path))
            elif entry.is_dir():
                dirs.append((entry.name, entry.path))
    return files, dirs


def iter_dir(dir, action):
    for dirpath, dirnames, filenames in os.walk(dir):
        for f in dirnames:
            action(dirpath, f, False)
        for f in filenames:
            action(dirpath, f, True)


def remove_files_matching(dir, regex):
    total = 0

    def iter_action(path, name, is_file):
        nonlocal total
        if is_file and regex.match(name):
            os.remove(os.path.join(path, name))
            total += 1
    iter_dir(dir, iter_action)
    print("Removed {} unneeded files".format(total))


if __name__ == "__main__":
    RE_UNNEEDED_FILES = r"\.DS_Store|\._.*"
    remove_files_matching(".", re.compile(RE_UNNEEDED_FILES, re.I))