#!usr/bin/env python
# -*- coding:utf-8 _*-
"""
@version: 0.0.1
@author: ShenTuZhiGang
@time: 2021/03/09 19:52
@file: renamedemo.py
@function:
@last modified by: ShenTuZhiGang
@last modified time: 2021/03/09 19:52
"""
import imghdr
import os


def rename():
    path = input("请输入路径(例如D:\\\\picture)：")
    name = input("请输入开头名:")
    start_number = int(input("请输入开始数:"))
    print("正在生成以" + name + str(start_number) + "迭代的文件名")
    file_list = os.listdir(path)
    for files in file_list:
        old_dir = os.path.join(path, files)
        if os.path.isdir(old_dir):
            continue
        new_dir = os.path.join(path, name + str(start_number) + "." + imghdr.what(old_dir))
        os.rename(old_dir, new_dir)
        start_number += 1
    print("一共修改了" + str(len(file_list)) + "个文件")


rename()

参考文章

Python对文件批量重命名