文件操作-递归文件夹批量修改文件后缀

import os


def traverse_dir(path, format=None):
    """
    :param path: 文件夹路径
    :param format: 要修改成的文件后缀，要加.
    :return:None
    """
    for root, dirs, files in os.walk(path):
        for file in files:
            num = 1
            file_path = os.path.join(root, file)
            filename, _format = os.path.splitext(file_path)
            _format = format or _format
            new_path = os.path.join(root, "%05d" % num + _format)
            while os.path.exists(new_path):
                if new_path==file_path:
                    break
                num += 1
                new_path = os.path.join(root, "%05d" % num + _format)
            else:
                os.rename(file_path, new_path)
                print(file_path, "变更为-->", new_path)
        for dir in dirs:
            dir_path = os.path.join(root, dir)
            print(dir_path)
            traverse_dir(dir_path, format)


if __name__ == '__main__':
    path = r"D:\test"
    traverse_dir(path, ".json")