有没有办法反转扁平化一个目录？Python还是shell？

import os

def reverse_directory(directory):
    for root, dirs, files in os.walk(directory):
        for file in files:
            file_path = os.path.join(root, file)
            new_path = os.path.join(directory, file)
            os.rename(file_path, new_path)
        for dir in dirs:
            dir_path = os.path.join(root, dir)
            reverse_directory(dir_path)
            os.rmdir(dir_path)

# 调用示例
reverse_directory('/path/to/directory')

#!/bin/bash

reverse_directory() {
    for file in "$1"/*; do
        if [ -d "$file" ]; then
            reverse_directory "$file"
        elif [ -f "$file" ]; then
            mv "$file" "$1"
        fi
    done
    rmdir "$1"
}

# 调用示例
reverse_directory "/path/to/directory"