# coding:utf-8
__author__ = 'tiankangbo'

'''
爬虫的控制程序，要实现crawl的开启，暂停，继续，停止
'''

from scrapy import signals, signalmanager

class spiderCtrl(object):
    def __int__(self):
        pass

    @classmethod
    def from_crawl(cls, crawler):

        pass