Flask实现图片的上传、下载及展示

import PIL.Image as Image
import os


toImage = Image.new('RGB', (850 * 8, 1100))  # 构造图片的宽和高，如果图片不能填充完全会
dir_root = "./img_2"
files = os.listdir(dir_root)
count = 0
for file_name in files:
    fname = os.path.join(dir_root, file_name)
    fromImage = Image.open(fname)
    fromImage = fromImage.resize((850, 1100))
    toImage.paste(fromImage, (850 * count, 0))
    count += 1
toImage.save('ddd.jpg')

https://blog.csdn.net/iamjingong/article/details/91490130