项目目录：
    image.png

    1. 第一步:创建项目
    2. scrapy startproject  pearVideo
    3. 第二步:
    4. cd pearVideo
    5. scrapy genspider pearVideos "www.pearvideo.com/category_6"
    1. pearVideos.py文件
    2. import scrapy
    4. from pearVideo.items import PearvideoItem
    5. class PearvideosSpider(scrapy.Spider):
    6.     name = 'pearVideos'
    7.     allowed_domains = ['www.pearvideo.com']
    8.     start_urls = ['https://www.pearvideo.com/category_6']
    10.     def parse(self, response):
    11.         li_list = response.xpath('//ul[@id="listvideoListUl"]/li')
    12.         for li in li_list:
    13.             item = PearvideoItem()
    14.             item['title'] = li.xpath('./div/a//div[@class="vervideo-title"]/text()').get()
    15.             item['author'] = li.xpath('.//a[@class="column"]/text()').get()
    16.             item['nums'] = li.xpath('.//span[@class="fav"]/text()').get()
    17.             print(item)
    18.             yield item
    20.  items.py文件
    21.  class PearvideoItem(scrapy.Item):
    22.     title = scrapy.Field()
    23.     author = scrapy.Field()
    24.     nums = scrapy.Field()
    26. run.py 运行项目文件
    27. from scrapy import cmdline
    28. # 执行项目
    29. #cmdline.execute('scrapy crawl pearVideos -o pearvideo.csv'.split())
    30. cmdline.execute('scrapy crawl pearVideos'.split())