# -*- coding: utf-8 -*-
import json
from collections import Counter


def items_iterator(objects_list, model):
    for string_item, count in Counter(objects_list).items():
        item = model._collector_class(*json.loads(string_item))
        yield item._replace(value=item.value * count)


def unique_items_iterator(objects_list):
    for string_item, count in Counter(objects_list).items():
        item = json.loads(string_item)
        yield tuple(item[:-1]), item[-1] * count