import threading
def fun_timer():
print('hello Timer!')
global timer
timer = threading.Timer(5.5, fun_timer)
timer.start()

timer = threading.Timer(1, fun_timer)
timer.start()

timer.sleep(15) #15秒后停止定时器
timer.cancel() ##取消
Python定时任务框架APScheduler
http://www.cnblogs.com/hushaojun/p/5189109.html
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from scrapy.crawler import Crawler, CrawlerProcess
from scrapy.utils.project import get_project_settings

项目启动器

STARTER = CrawlerProcess(get_project_settings())
from apscheduler.schedulers.background import BlockingScheduler
def hellow():
print('11111111111')

def sory():
print('2222222222222')

process = CrawlerProcess(get_project_settings())
sched = BlockingScheduler()

sched.add_job(hellow, 'cron', day_of_week='0-4', hour='9', minute='25')

configs = [{'day_of_week': '0-4', 'hour': 9, 'minute': '30-59', 'second': '/30'},
{'day_of_week': '0-4', 'hour': 10, 'second': '/30'},
{'day_of_week': '0-4', 'hour': 11, 'minute': '0-35', 'second': '/30'},
{'day_of_week': '0-4', 'hour': '13-14', 'second': '/30'},
{'day_of_week': '0-4', 'hour': 15, 'minute': '0-5', 'second': '*/30'}, ]

for config in configs:
sched.add_job(sory, 'cron', **config)
sched.start()
process.start()