old_contents: # -*- coding: utf-8 -*-
  
  # Define here the models for your scraped items
  #
  # See documentation in:
  # http://doc.scrapy.org/en/latest/topics/items.html
  
  import scrapy
  
  class ArticleItem(scrapy.Item):
      id = scrapy.Field()
      url = scrapy.Field()
      title = scrapy.Field()
      content = scrapy.Field()
  
new_contents: # -*- coding: utf-8 -*-
  
  # Define here the models for your scraped items
  #
  # See documentation in:
  # http://doc.scrapy.org/en/latest/topics/items.html
  
  import scrapy
  
  class ArticleItem(scrapy.Item):
      url = scrapy.Field()
      date = scrapy.Field()
      title = scrapy.Field()
      content = scrapy.Field()
  
subject: 修改 item