def _async_photo_processing(self):
#start downloading photo stream
for cat in PHOTO_CATEGORIES:
ps = PhotoStream()
photo_list = ps.request_pop_photo_stream(cat, 0)
located_photos = ps.get_located_photos(photo_list, cat)
if len(located_photos) > 0:
ps.save_photo_stream_to_db(located_photos, cat)
