自定制命令

在spaider同级，创建任意目录commands

在其中创建crawlall文件

from scrapy.commands import ScrapyCommand
    from scrapy.utils.project import get_project_settings


    class Command(ScrapyCommand):

        requires_project = True

        def syntax(self):
            return '[options]'

        def short_desc(self):
            return 'Runs all of the spiders'

        def run(self, args, opts):
            spider_list = self.crawler_process.spiders.list()
            for name in spider_list:
                self.crawler_process.crawl(name, **opts.__dict__)
            self.crawler_process.start()

在settings中添加配置，COMMANDS_MODULE = '项目名称.目录名称'；

在项目目录执行命令，crapy crawlall