class parser():

    def check_image_count(self, image_list, text):
        pair_obj = findTag(text)
        if pair_obj['code'] == 1:
            if len(image_list)!=len(pair_obj['pair']):
                return {'msg':'圖片與標籤數量不一致!','code':-1}
            else:
                return {code:1}
        else:
            return pair_obj
            

    def findTag(self, text):
        left_tag = [m.start() for m in re.finditer('{(', in_str)]
        right_tag = [m.start() for m in re.finditer(')}', in_str)]
        if len(left_tag)!=len(right_tag):
            return {'msg':'圖片標籤錯誤，左右數量不符','code':-1}
        pair = []
        for idx in range(len(left_tag)):
            pair.append({'left':left_tag[idx],'right':right_tag[idx]])
        obj = {'code':1,'pair':pair}
        return obj