Remove empty dirs and their meta files for a Unity project

remove_empty_dirs.py

#! /usr/bin/env python

import os
import click


@click.command()
@click.argument("path")
@click.option("-n", "--dry-run", is_flag=True, help="dry-run")
def remove_empty_dirs(path, dry_run=False):
    """
    Remove any empty directories within the path,
    recursively.
    """
    if not os.path.isdir(path):
        return

    for dirpath, dirnames, filenames in os.walk(path, topdown=False, followlinks=False):
        for filename in filenames:
            filepath = os.path.join(dirpath, filename)
            if filepath.endswith('.meta'):
                paired_file = filepath.split('.meta')[0]
                if not os.path.exists(paired_file):
                    print("Removing unused meta file: " + filepath)
                    if not dry_run:
                        os.remove(filepath)
        if not len(filenames) and not len(dirnames):
            print("Removing empty folder: " + dirpath)
            if not dry_run:
                os.rmdir(dirpath)


if __name__ == "__main__":
    remove_empty_dirs()