python定时器使用示例分享

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