Python实现定时执行任务的三种方式简单示例

本文实例讲述了Python实现定时执行任务的三种方式。分享给大家供大家参考,具体如下:

1.定时任务代码

import time,os,sched
schedule = sched.scheduler(time.time,time.sleep)
def perform_command(cmd,inc):
   os.system(cmd)
   print ( 'task' )
def timming_exe(cmd,inc = 60 ):
   schedule.enter(inc, 0 ,perform_command,(cmd,inc))
   schedule.run()
print ( 'show time after 2 seconds:' )
timming_exe( 'echo %time%' , 2 )

2.周期性执行任务

import time,os,sched
schedule = sched.scheduler(time.time,time.sleep)
def perform_command(cmd,inc):
   #在inc秒后再次运行自己,即周期运行
   schedule.enter(inc, 0 , perform_command, (cmd, inc))
   os.system(cmd)
def timming_exe(cmd,inc = 60 ):
   schedule.enter(inc, 0 ,perform_command,(cmd,inc))
   schedule.run() #持续运行,直到计划时间队列变成空为止
print ( 'show time after 2 seconds:' )
timming_exe( 'echo %time%' , 2 )
3.循环执行命令
import time,os
def re_exe(cmd,inc = 60 ):
   while True :
     os.system(cmd)
     time.sleep(inc)
re_exe( "echo %time%" , 5 )

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转载自www.cnblogs.com/sunyllove/p/11205923.html