python实现每天定时任务(1)

下面代码执行时是在第二天的20点执行任务。

import time
from datetime import datetime, timedelta
from time import sleep

SECONDS_PER_DAY = 24 * 60 * 60


def doFunc():
    print "do Function..."

def doFirst():
    curTime = datetime.now()
    print curTime
    desTime = curTime.replace(hour=20, minute=0, second=0, microsecond=0)
    print desTime
    delta = curTime - desTime
    print delta
    skipSeconds = SECONDS_PER_DAY - delta.total_seconds()
    print "Next day must sleep %d seconds" % skipSeconds
    sleep(skipSeconds)
    doFunc()

if __name__ == "__main__":
    doFirst()