我想将图像存储在不同的文件夹中,文件夹名称为item['title']
.
请查看下面的代码,但它不起作用。
def image_key(self, url,item):
image_guid = hashlib.sha1(url).hexdigest()
return '%s/full/%s.jpg' % (item['title'],image_guid)
def get_media_requests(self, item, info):
for image_url in item['image_urls']:
yield Request(image_url,meta={'id':item['title']})
def item_completed(self, results, item, info):
image_paths = [x['path'] for ok, x in results if ok]
if not image_paths:
raise DropItem("item contains no images")
item['image_paths'] = image_paths
return item
有任何想法吗?