python APScheduler 定时调度 框架
python APScheduler 框架，模仿Java的Quartz框架写的，强大给力。
它的主页是：http://packages.python.org/APScheduler/index.html
提问的地方：http://groups.google.com/group/apscheduler （老外很认真的回答你的问题）
它的按照很简单：参考主要的install就可以了，就两三步
例子如下：
from apscheduler.scheduler import Scheduler
import time
# Start the scheduler
sched = Scheduler()
def job_function():
print "Hello World"
print 'start to sleep'
print 'wake'
sched.daemonic = False
sched.add_cron_job(job_function,day_of_week='mon-fri', hour='*', minute='0-59',second='*/5')
sched.start()
这个是最简单的例子（目前我初学，呵呵）
这里要提到的是：
apscheduler会创建一个线程，这个线程默认是daemon=True，也就是默认的是线程守护的。
在上面的代码里面，要是不加上sched.daemonic=False的话，这个脚本就不会运行。
因为上面的脚本要是没有sched.daemonic=False的话，它会创建一个守护线程。这个过程中，会创建scheduler的实例。但是由于脚本很小，运行速度很快，主线程mainthread会马上结束，而此时定时任务的线程还没来得及执行，就跟随主线程结束而结束了。（守护线程和主线程之间的关系决定的）。要让脚本运行正常，必须设置该脚本为非守护线程。sched.daemonic=False
=================== end ======================
补充：
#-*-coding:utf-8-*-
from apscheduler.scheduler import Scheduler
def job_function(a):
print a
if __name__ == '__main__':
hello = 'hello world'
sched = Scheduler(daemonic=False) # 注意这里，要设置 daemonic=False
sched.add_cron_job(job_function, day_of_week='mon-fri', hour='*', minute='0-59', second='*/5', args=[hello]) # args=[] 用来给job函数传递参数
sched.start()
# ----------- 源码 -------------------------------
# def add_cron_job(self, func, year=None, month=None, day=None, week=None,
# day_of_week=None, hour=None, minute=None, second=None,
# start_date=None, args=None, kwargs=None, **options):
# """
# Schedules a job to be completed on times that match the given
# expressions.
#
# :param func: callable to run
# :param year: year to run on
# :param month: month to run on
# :param day: day of month to run on
# :param week: week of the year to run on
# :param day_of_week: weekday to run on (0 = Monday)
# :param hour: hour to run on
# :param second: second to run on
# :param args: list of positional arguments to call func with
# :param kwargs: dict of keyword arguments to call func with
# :param name: name of the job
# :param jobstore: alias of the job store to add the job to
# :param misfire_grace_time: seconds after the designated run time that
# the job is still allowed to be run
# :return: the scheduled job
# :rtype: :class:`~apscheduler.job.Job`
# """
#