python定时器使用示例分享

class sltimer(multiprocessing.process):
    #from datetime import datetime
    #import time

    def __init__(self, target=none, args=(), kwargs={},date=none,time=none):
        '''\
        @param date 1900-01-01
        @param time 00:00:00
        '''
        super(sltimer,self).__init__(target=target,args=args,kwargs=kwargs)
        _date = ''
        if date is none:
            _date = datetime.now().__str__()[:10]
        else :
            _date = date

        _time = ''
        if time is none:
            _time = datetime.now().__str__()[11:19]
        else:
            _time = time

        self.__runtime = '%s %s' % (_date,_time)

    def run(self):
        timelen = len('1900-00-00 00:00:00')

        while true:
            now = datetime.now().__str__()[:timelen]
            if now>=self.__runtime:
                break
            print 'sleeping... %s' % now
            time.sleep(1.0)

        super(sltimer,self).run()

测试

def show1():
    from datetime import datetime
    print 'hello,current time:%s' % datetime.now().__str__()

def t23():
    from  stock.task import sltimer

    timer = sltimer(show1, time='16:31:50')
    timer.start()