ディレクトリを再帰的にリストする

import os

def list_directory_recursively(directory):
    paths = []
    for root, dirs, files in os.walk(directory):
        for name in files:
            paths.append(os.path.join(root, name))
        for name in dirs:
            paths.append(os.path.join(root, name))
    return paths