提取多个文件夹图片到一个文件夹

new_img = "C:\\Users\\jxy11\\Desktop\\polyu-all-test"
for i in range(26):
    path_img = "C:\\Users\\jxy11\\Desktop\\polyu-test\\p" + str(i+1) +"\\"
    Is = os.listdir(path_img)
    for j in Is:
        shutil.copy(path_img + j, new_img)