使用蜘蛛爬虫的蜘蛛__init__中的参数

我正在尝试使用蜘蛛爬虫代码来获取一些房地产数据 . 但它一直给我这个错误：

回溯（最近一次调用最后一次）：文件“//anaconda/lib/python2.7/site-packages/twisted/internet/defer.py”，第1301行，在_inlineCallbacks中结果= g.send（结果）文件“/ /anaconda/lib/python2.7/site-packages/scrapy/crawler.py“，第90行，在抓取six.reraise（* exc_info）文件”//anaconda/lib/python2.7/site-packages/scrapy/ crawler.py“，第71行，在抓取中self.spider = self._create_spider（* args，** kwargs）文件”//anaconda/lib/python2.7/site-packages/scrapy/crawler.py“，第94行，在_create_spider中返回self.spidercls.from_crawler（self，* args，** kwargs）文件“//anaconda/lib/python2.7/site-packages/scrapy/spiders/crawl.py”，第96行，来自from_crawler spider = super（CrawlSpider，cls）.from_crawler（crawler，* args，** kwargs）文件“//anaconda/lib/python2.7/site-packages/scrapy/spiders/init.py”，第50行，来自from_crawler spider = cls（* args，** kwargs）TypeError：init（）只需3个参数（给定1个）

以下是定义抓取工具的代码：

class RealestateSpider(scrapy.spiders.CrawlSpider):

    ###Real estate web crawler
    name = 'buyrentsold'
    allowed_domains = ['realestate.com.au']

    def __init__(self, command, search):
        search = re.sub(r'\s+', '+', re.sub(',+', '%2c', search)).lower()
        url = '/{0}/in-{{0}}{{{{0}}}}/list-{{{{1}}}}'.format(command)
        start_url = 'http://www.{0}{1}'
        start_url = start_url.format(
                self.allowed_domains[0], url.format(search)
        )
        self.start_urls = [start_url.format('', 1)]
        extractor = scrapy.linkextractors.sgml.SgmlLinkExtractor(
                allow=url.format(re.escape(search)).format('.*', '')
        )
        rule = scrapy.spiders.Rule(
                extractor, callback='parse_items', follow=True
        )
        self.rules = [rule]
        super(RealestateSpider, self).__init__()

    def parse_items(self, response):
        ###Parse a page of real estate listings
        hxs = scrapy.selector.HtmlXPathSelector(response)
        for i in hxs.select('//div[contains(@class, "listingInfo")]'):
            item = RealestateItem()
            path = 'div[contains(@class, "propertyStats")]//text()'
            item['price'] = i.select(path).extract()
            vcard = i.select('div[contains(@class, "vcard")]//a')
            item['address'] = vcard.select('text()').extract()
            url = vcard.select('@href').extract()
            if len(url) == 1:
                item['url'] = 'http://www.{0}{1}'.format(
                        self.allowed_domains[0], url[0]
                )
            features = i.select('dl')
            for field in ('bed', 'bath', 'car'):
                path = '(@class, "rui-icon-{0}")'.format(field)
                path = 'dt[contains{0}]'.format(path)
                path = '{0}/following-sibling::dd[1]'.format(path)
                path = '{0}/text()'.format(path)
                item[field] = features.select(path).extract() or 0
            yield item

这是erorr出现的时候：

crawler = scrapy.crawler.CrawlerProcess(scrapy.conf.settings)
sp=RealestateSpider(command, search)
crawler.crawl(sp)
crawler.start()

任何人都可以帮我解决这个问题吗？谢谢！