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

#!/user/bin/env python
# @Time   :2018/6/7 16:31
# @Author  :PGIDYSQ
#@File   :PerformTaskTimer.py
#定时执行任务命令
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

#!/user/bin/env python
# @Time   :2018/6/7 16:31
# @Author  :PGIDYSQ
#@File   :PerformTaskTimer.py
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

#!/user/bin/env python
# @Time   :2018/6/7 16:31
# @Author  :PGIDYSQ
#@File   :PerformTaskTimer.py
import time,os
def re_exe(cmd,inc = 60):
  while True:
    os.system(cmd)
    time.sleep(inc)
re_exe("echo %time%",5)

希望本文所述对大家Python程序设计有所帮助。