我正在学习scrapy，并试图刮这个房地产经纪人网站在魁北克省。我正在使用他们的API来收集房屋和打印网址到屏幕上。但我的最后一个函数print_urls（）不会运行。我真的被困在这里，我试图调试它，它只是跳过我的整个功能块。

class CentrishomesSpider(scrapy.Spider):
    name = 'centrisHomes'
    # allowed_domains = ['www.centris.ca']
    # start_urls = ['http://www.centris.ca/']

    def start_requests(self):
        query = {...
        }

        yield scrapy.Request(
            url='https://www.centris.ca/property/UpdateQuery',
            method='POST',
            body=json.dumps(query),
            headers={
                'Content-Type': 'application/json',
                'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36'
            },
            callback=self.get_inscriptions
        )
        ...

    def get_inscriptions(self, response):
        resp, success = self.success(response)
        if success == True:
            print(Fore.GREEN + 'Query Updated' + Style.RESET_ALL)
        else:
            print(Fore.RED + 'Query Not Updated' + Style.RESET_ALL)

        yield scrapy.Request(
            url='https://www.centris.ca/Property/GetInscriptions',
            method='POST',
            body=json.dumps({"startPosition": 0}),
            headers={
                'Content-Type': 'application/json',
                'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36'
            },
            callback=self.handle_inscriptions
        )

    def handle_inscriptions(self, response):
        homes, success = self.success(response)
        if success == True:
            print(Fore.GREEN + 'Count ' + str(homes['d']['Result']['count']) + Style.RESET_ALL)
        # self.test()
        self.html = Selector(text=homes['d']['Result']['html'])
        self.print_urls()
        # print(response.body)
        ...

    def success(self, response):
        my_dict = literal_eval(response.body.decode(
            'utf-8').replace(':true}', ':True}'))
        if my_dict['d']['Succeeded'] == True:
            return my_dict, True
        else:
            return False

    def print_urls(self):
        print('try')
        # page_html = Selector(resp['d']['Result']['html'])
        page_html = self.html
        homes = page_html.xpath('//div[contains(@class, "property-thumbnail-item")]')
        for home in homes:
            yield{
            'home_url':home.xpath('.//a[@class="property-thumbnail-summary-link"]/@href').get()
            }
        ...