def __iter__(self):
session = requests.Session()
for thread in self.search():
for post in chan.Thread(self.board, num=thread).posts:
for pic in post.pictures:
if PictureModel.check_existance(pic.url):
continue
picture = PictureModel.create(
url=pic.url,
thread=thread,
caption=purify_message(post.message))
yield picture
