ITHOME

from PIL import Image
import os, sys

path = "./images/"
if not os.path.exists(path):
   os.makedirs(path)

dirs = os.listdir(path)
final_size = 600;



def resize_aspect_fit():
    for item in dirs:
        if os.path.isfile(path + item):
            im = Image.open(path + item)
            f, e = os.path.splitext(path + item) #将文件名路径和扩展名分开， e.g. ('c:\window\python','.py')
            size = im.size
            ratio = float(final_size) / max(size)
            new_image_size = tuple([int(x * ratio) for x in size])
            im = im.resize(new_image_size, Image.ANTIALIAS)
            new_im = Image.new("RGB", (final_size, final_size))
            new_im.paste(im, ((final_size - new_image_size[0]) // 2, (final_size - new_image_size[1]) // 2))
            new_im.save(f + '_resized.jpg', 'JPEG', quality=80)



#run the function

resize_aspect_fit()