python定时任务调度库_apscheduler的使用（1）

1、安装

$ pip install apscheduler

2、参考

api教程：http://apscheduler.readthedocs.org/en/latest/

demo下载：https://bitbucket.org/agronholm/apscheduler/downloads

3、代码描述

"""
Demonstrates how to use the background scheduler to schedule a job that executes on 3 second intervals.
"""

import time

from apscheduler.schedulers.background import BackgroundScheduler


def tick():
    print('Tick! The time is: %s' %  time.strftime('%Y-%m-%d %X',time.localtime()))


if __name__ == '__main__':
    scheduler = BackgroundScheduler()
    scheduler.add_job(tick, 'interval', seconds=30)
    scheduler.start()
    try:# This is here to simulate application activity (which keeps the main thread alive)
        while True:
            time.sleep(2)
    except (KeyboardInterrupt, SystemExit):
        scheduler.shutdown()

4、编译运行问题

如果遇到import error  ......

一般是缺少依赖库导致，需要安装：pip install SQLAlchemy      pip install pymongo