python制作图片缩略图

import os
import glob
from PIL import Image

def thumbnail_pic(path):
 #glob.glob(pathname)，返回所有匹配的文件路径列表
 a=glob.glob(r'./img/*.jpg')
 for x in a:
 name=os.path.join(path,x)
 im=Image.open(name)
 im.thumbnail((80,80))
 print(im.format,im.size,im.mode)
 im.save(name,'JPEG')
 print('Done!')

if __name__=='__main__':
 path='.'
 thumbnail_pic(path)

# 同时使用图片和文件管道
ITEM_PIPELINES = {
   'scrapy.pipelines.images.ImagesPipeline': 1,
   'scrapy.pipelines.files.FilesPipeline': 2,
   }
# 指定图片字段
IMAGES_URLS_FIELD = 'images'
IMAGES_STORE = '/path/to/valid/dir' # 图片存储路径
# 文件过期90天
FILES_EXPIRES = 90
# 图像过期延迟30天
IMAGES_EXPIRES = 30
# 图片缩略图
IMAGES_THUMBS = {
 'small': (50, 50),
 'big': (270, 270),
}
# 图片过滤器，最小高度和宽度
IMAGES_MIN_HEIGHT = 110
IMAGES_MIN_WIDTH = 110

class YuehuiImagePipeline(ImagesPipeline):
 def item_completed(self, results, item, info):
 if results[0][0]:
  item['image_path'] = results[0][1]['path']
 else:
  item['image_path'] = ''

 return item

class YuehuiItem(scrapy.Item):
 uid= scrapy.Field()
 height = scrapy.Field()
 weight = scrapy.Field()
 images = scrapy.Field() #头像url字段 要求列表 在setting文件中配置
 image_path = scrapy.Field()