代码如下： 先在主页获取子页面，大概 64 个，然后并发访问子页面， 总用时大概 36s，感觉还是有点慢。

 URL_MAP = {'home_page': 'https://xxx/stocks/industry', 'base': 'https://xxx.com'}   class App(BaseService):      def __init__(self):         super(App, self).__init__()       async def home_page(self):         start = time.time()         async with aiohttp.ClientSession() as session:              async with session.get(url=URL_MAP['home_page'], headers=headers) as response:                     html = await response.text()  # 这个阻塞                     resp = Selector(text=html)                     industries = resp.xpath('//ul[@class="list-unstyled"]/a')                     task_list =[]                     for industry in industries:                         json_data = {}                         industry_url = industry.xpath('.//@href').extract_first()                         industry_name = industry.xpath('.//li/text()').extract_first()                         json_data['industry_url'] = industry_url                         json_data['industry_name'] = industry_name                          task = asyncio.ensure_future(self.detail_list(session, industry_url, json_data))                         task_list.append(task)                      await asyncio.gather(*task_list)                     end = time.time()                      print(f'time used {end-start}')      async def detail_list(self, session, url, json_data):          async with session.get(URL_MAP['base']+url, headers=headers) as response:             response = await response.text()             self.parse_detail(response, json_data)      def parse_detail(self, html, json_data=None):         resp = Selector(text=html)         # info = resp.xpath('//div[@id="v_desc"]/div[@class="info open"]/text()').extract_first()         title =resp.xpath('//title/text()').extract_first()         print(title)   app = Holdle() loop = asyncio.get_event_loop() loop.run_until_complete(app.home_page())