python 폴더내 파일 작업하기

import os
import cv2 as cv
import numpy as np
from tqdm import tqdm
from PIL import Image


path = './temp';
file_list = [os.path.join(path, file_name) for file_name in os.listdir(path)]
print(file_list)
print(path)
for file_ in tqdm(file_list):
    im = Image.open(file_).convert('RGB')
    im.save(file_,'jpeg')