def中如何使用协程方式爬取小红书数据

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小红书数据采集教程，使用协程方式爬取小红书 热门页 下的数据

from gevent import monkey# 猴子补丁monkey.patch_all()from gevent.pool import Poolfrom queue import Queueimport requestsimport jsonfrom lxml import etreeclass RedBookSpider():    """小红书爬虫"""    def __init__(self, pages):        """初始化"""        self.url = 'https://www.xiaohongshu.com/web_api/sns/v2/trending/page/brand?page={}&page_size=20'        self.headers = {            "User-Agent": "Mozilla/5.0 (Linux; Android 5.0; SM-G900P Build/LRX21T) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.131 Mobile Safari/537.36"        }        self.url_queue = Queue()        self.pool = Pool(5)        self.pages = pages        pass    def get_url(self):        """获取url"""        for page in range(1, self.pages):            url = self.url.format(page)            self.url_queue.put(url)    def save_data(self, items):        """数据保存"""        with open('./redbook.txt', 'a', encoding='utf-8') as f:            f.write(str(items) + '\n')    def deal_detail(self, detail_url, items, data):        """详情页内容提取"""        resp = requests.get(url=detail_url, headers=self.headers)        eroot = etree.HTML(resp.text)        items['fans'] = eroot.xpath('//div[@data-v-64bff0ce]/div[@class="extra"]/text()')        items['articles'] = eroot.xpath('//div/span[@class="stats"]/text()')        items['introduce'] = eroot.xpath('//div[@class="desc"]/div[@class="content"]/text()')        items['detail_url'] = detail_url        items['image'] = data['page_info']['banner']        print(items)        self.save_data(items)    def deal_response(self, resp):        """数据提取"""        dict_data = json.loads(resp.text)        dict_data = dict_data['data']        for data in dict_data:            items = {}            items['name'] = data['page_info']['name']            detail_url = 'https://www.xiaohongshu.com/page/brands/' + data['page_id']            self.deal_detail(detail_url, items, data)    def execute_task(self):        """处理响应"""        url = self.url_queue.get()        resp = requests.get(url=url, headers=self.headers)        # print(resp.text)        self.deal_response(resp)        self.url_queue.task_done()    def execute_task_finished(self, result):        """任务回调"""        self.pool.apply_async(self.execute_task, callback=self.execute_task_finished)    def run(self):        """启动程序"""        self.get_url()        for i in range(3):            self.pool.apply_async(self.execute_task, callback=self.execute_task_finished)        self.url_queue.join()        passif __name__ == '__main__':    user = RedBookSpider(4)    # 需要爬取几页数据  就改为多少    user.run()

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