python3批量为文件重命名

#!/usr/bin/env python
# -*- coding:utf-8 -*-
"""
@author:Aiker Zhao
@file:rename_all.py
@time:下午10:29
"""

import os

path = "M:\\bd1\\都挺好\\"
new_path = "M:\\bd1\\doutinghao\\"
for file in os.listdir(path):
    # print(file)
    if os.path.isfile(os.path.join(path, file)) == True:
        if file.find('.mp4') < 0:
            print(file)
        else:
            file_number = file.split('@')[0]
            print(file_number)
            new_file_name = '都挺好' + file_number + '.mp4'
            print(new_file_name)
            os.rename(os.path.join(path, file), os.path.join(new_path, new_file_name))