scrapy按順序啟動多個爬蟲代碼片段(python3)

問題：在運行scrapy的過程中，如果想按順序啟動爬蟲怎么做？

背景：爬蟲A爬取動態代理ip，爬蟲B使用A爬取的動態代理ip來偽裝自己，爬取目標，那么A一定要在B之前運行該怎么做？

IDE：pycharm

版本：python3

框架：scrapy

系統：windows10

代碼如下：（請自行修改）

# !/usr/bin/env python3
# -*- coding:utf-8 -*-
from scrapy import cmdline
from twisted.internet import reactor, defer
from scrapy.crawler import CrawlerRunner
from scrapy.utils.log import configure_logging
from torrentSpider.spiders.proxy_ip_spider import ProxyIpSpider
from torrentSpider.spiders.douban_spider import DoubanSpider
from scrapy.utils.project import get_project_settings

'''
以下是多個爬蟲順序執行的命令
'''
configure_logging()
# 加入setting配置文件，否則配置無法生效
# get_project_settings()獲取的是setting.py的配置

runner = CrawlerRunner(get_project_settings())

@defer.inlineCallbacks
def crawl():
    yield runner.crawl(ProxyIpSpider)
    yield runner.crawl(DoubanSpider)
    reactor.stop()


crawl()
reactor.run()  # the script will block here until the last crawl call is finished

'''
以下是單個爬蟲執行的命令
'''
# def execute():
    # cmdline.execute(['scrapy', 'crawl', 'proxy_ip_spider'])
#
#
# execute()