从不同文件夹读取．ｐｎｇ图片并保存到一个文件夹下

import os
from glob import glob
from PIL import Image
path = './'
for i in range(４):
    path_ = path+ str(i+1)
    file_list = glob(os.path.join(path_,'*.png'))
    # print(file_list[0])
    img = Image.open(file_list[0])
    s = file_list[0].split('/')[-1]
    # print(s)
    path_s =  path+'ｒｒ/'+s
    img.save(path_s)