将文件内图片批量改名为0001，0002......

import os
def main():
    folder_path = input("请输入存放图片文件路径：")
    num = 1
    for file in os.listdir(folder_path):
        s = '%04d' % num  # 前面补零占位
        os.rename(os.path.join(folder_path, file), os.path.join(folder_path, 'face_' + str(s) + '.jpg'))
        num += 1
if __name__ == '__main__':
    main()