python apscheduler

# coding=utf-8
from apscheduler.scheduler import Scheduler
import time,datetime 

def job_function():
    print "Hello World"
if __name__ == '__main__':
    sched = Scheduler()
    sched.daemonic = False
    sched.add_cron_job(job_function,day_of_week='*', hour='*', minute='0-59',second='*/5')
    sched.start()
    lastDate = datetime.date.today() - datetime.timedelta(days=1)
    print lastDate.strftime('%Y%m%d')