Scrapy 源代码分析系列-4 scrapy.commands 子包 子包scrapy.commands定义了在命令scrapy中使用的子命令(subcommand): bench, check, crawl, deploy, edit, fetch, genspider, list, parse, runspider, settings, shell, startproject, version, view. 所有的子命令模块都定义了一个继承自 类ScrapyCommand的子类Comman…