Python 系列教案第 3 课：中高阶难度批量文件重命名

Python
import os
import re
from typing import List, Dict


class FileRenamer:
    """批量文件重命名工具，支持前缀、序号、正则替换、过滤扩展名"""

    def __init__(self, target_dir: str, ext_filter: List[str] = None):
        self.target_dir = target_dir
        self.ext_filter = [ext.lower() for ext in ext_filter] if