摘要: 经过实践, yield dict和yield item一样有效果,不过为什么官方要用yield item ,以下是官方解释: The main goal in scraping is to extract structured data from unstructured sources, typi 阅读全文
posted @ 2020-01-08 20:18 liuxianglong 阅读(1135) 评论(0) 推荐(0) 编辑