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APScheduler是基于Quartz的一个Python定时任务框架，实现了Quartz的所有功能，使用起来十分方便。提供了基于日期、固定时间间隔以及crontab类型的任务，并且可以持久化任务。基于这些功能，我们可以很方便的实现一个python定时任务系统。
安装过程很简单，可以基于pip和源码。
Pip install apscheduler==3.0.3
或者下载源码，运行命令：
Python setup.py install
1: #coding=utf-8
2: from apscheduler.schedulers.blocking import BlockingScheduler
3: from datetime import datetime
4: import time
5: import os
6:
7: def tick():
8: print(‘Tick! The time is: %s‘ % datetime.now())
9:
10: if __name__ == ‘__main__‘:
11: scheduler = BlockingScheduler()
12: scheduler.add_job(tick,‘cron‘, second=‘*/3‘, hour=‘*‘)
13: print(‘Press Ctrl+{0} to exit‘.format(‘Break‘ if os.name == ‘nt‘ else ‘C‘))
14: try:
15: scheduler.start()
16: except (KeyboardInterrupt, SystemExit):
17: scheduler.shutdown()
18:
19:
20:
|
Expression |
Field |
Description |
|
* |
any |
Fire on every value |
|
*/a |
any |
Fire every a values, starting from the minimum |
|
a-b |
any |
Fire on any value within the a-b range (a must be smaller than b) |
|
a-b/c |
any |
Fire every c values within the a-b range |
|
xth y |
day |
Fire on the x -th occurrence of weekday y within the month |
|
last x |
day |
Fire on the last occurrence of weekday x within the month |
|
last |
day |
Fire on the last day within the month |
|
x,y,z |
any |
Fire on any matching expression; can combine any number of any of the above expressions |
Python定时任务框架APScheduler 3.0.3 Cron示例
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原文地址：http://www.cnblogs.com/leleroyn/p/4501359.html
