Python 使用gae搜索和游标分页时，除最后一页外，所有页面上的实体总数错误

我使用gae的搜索API，得到了一些奇怪的结果。当它返回文档数量时，它的数量大约是10倍。我在mapreduce中使用if测试来检查实体是否可见（一个布尔变量），以及该实体是否在过去60天内被修改，只有在过去60天内修改的实体才应该在索引中。那么你认为我做错了什么？奇怪的是，它返回的元素数与一个空白查询的总数差不多，而这个查询的总数应该与索引中的所有内容相匹配，我得到的元素数是它应该返回的元素数的十倍，但只有数字是错误的，当我翻阅实际结果集时，它的长度是正确的，然后最后一页匹配的总实体数的值是正确的。你能帮助我吗？在除最后一页之外的所有分页页上，结果数过多。

仅在最后一页显示正确的实体总数。为什么？

我用于构建索引的mapreduce代码是：

def index(entity):
    try:
        edge = datetime.datetime.now() - timedelta(days=60)
        if (entity.published == True and entity.modified > edge):
            city_entity = montaomodel.City.all().filter('name =',
                    entity.city).get()
            region_entity = montaomodel.Region.all().filter('name =',
                    entity.region).get()

            price = 0
            try:
                if entity.price:
                price = long(entity.price)               
            except (Exception), e:
            price = 0
                logging.info('price conversion failed for entity %s', str(entity.key().id()) )

        mileage = -1
            try:
               if entity.mileage:
               mileage = int(entity.mileage)               
            except (Exception), e:
           mileage = -1
               logging.info('mileage conversion failed for entity %s', str(entity.key().id()) )

        regdate = -1
            try:
               if entity.regdate:
               regdate = int(entity.regdate)               
            except (Exception), e:
           regdate = -1
               logging.info('regdate conversion failed for entity %s', str(entity.key().id()) )

            company_ad = 0
            if entity.company_ad:
            company_ad = 1 

            cityId = 0
            if city_entity:
            cityId = city_entity.key().id() 

            regionID = 0
            if region_entity:
            regionID = region_entity.key().id() 

            category = 0
            if entity.category:
            category = entity.category 

            doc = search.Document(doc_id=str(entity.key()), fields=[
                search.TextField(name='title', value=entity.title),
                search.TextField(name='text', value=entity.text),
                search.TextField(name='city', value=entity.city),
                search.TextField(name='region', value=entity.region),
                search.NumberField(name='cityID',
                                   value=int(cityId)),
                search.NumberField(name='regionID',
                                   value=int(regionID)),
                search.NumberField(name='category',
                                   value=int(category)),
                search.NumberField(name='constant', value=1),
                search.NumberField(name='adID',
                                   value=int(entity.key().id())),
                search.TextField(name='name', value=entity.name),
                search.DateField(name='date',
                                 value=entity.modified.date()),
                search.NumberField(name='price', value=long(price)),
                search.NumberField(name='mileage',
                                   value=int(mileage)),
                search.NumberField(name='regdate',
                                   value=int(regdate)),
                search.TextField(name='type', value=entity.type),
                search.TextField(name='currency', value=entity.currency),
                search.NumberField(name='company_ad',
                                   value=company_ad),
                search.NumberField(name='hour',
                                   value=entity.modified.hour),
                search.NumberField(name='minute',
                                   value=entity.modified.minute),
                ], language='en')
            yield search.Index(name='ads').put(doc)
            #yield op.db.Put(ad)
    except Exception, e:
        logging.info('There occurred exception:%s' % str(e))

搜索代码是

def find_documents(query_string, limit, cursor):
    try:
        subject_desc = search.SortExpression(
            expression='date',
            direction=search.SortExpression.DESCENDING,
            default_value=datetime.now().date())

        # Sort up to 1000 matching results by subject in descending order
        sort = search.SortOptions(expressions=[subject_desc], limit=1000)

        # Set query options
        options = search.QueryOptions(
            limit=limit,  # the number of results to return
            cursor=cursor,
            sort_options=sort,
            #returned_fields=['author', 'subject', 'summary'],
            #snippeted_fields=['content']
         )
        query = search.Query(query_string=query_string, options=options)
        index = search.Index(name=_INDEX_NAME)
        # Execute the query
        return index.search(query)
    except search.Error:
        logging.exception('Search failed')
    return None

---

当有1000多个结果时，全文搜索报告找到的文档数是近似值。GAE使用的近似值与您的数据不符

你可以用 更改报告的搜索结果数的准确性，例如

    # Set query options
    options = search.QueryOptions(
        number_found_accuracy=2000
     )

这使得报告的文档数只要少于2000个就准确无误