Scrapy执行过程

Scrapy执行流程： 1）cmdline.execute("scrapy crawl xxx -o yyy.csv -t csv".split()) 执行爬虫xxx，结果保存在yyy.csv 2）执行cmdline.py中execute def execute(argv=None, settings=None): 3）执行project.py中get_project_settings def get_project_settings(): 4）执行到cmd.crawler_process = CrawlerProcess(settings)