如何在固定时间点将功能安排到 运行？

Question

是否有任何 python 库可以在固定时间点安排功能（任务）？

例如：

Every 5 mins: runs at xx:00, xx:05, xx:10 ...

Every 30 mins: runs at xx:00, xx:30 ...

Every 1 hours: runs at 00:00, 01:00, 02:00 ...

如果我必须自己实现，有没有方便的工具可以计算我在时间点之前要睡多少秒？

Answer 1

有python-crontab which is useful if your on a linux machine, and in case you are on a windows machine you might want to use the Task Scheduler, 你也可能想使用一些任务运行器，比如 celery.

Answer 2

Python 有一个名为 schedule 的库，它有助于在预定时间安排作业或功能。

使用

安装

pip install schedule

这里是 jupyter notebook python 脚本，它将演示 schedule 的例子

import schedule
import time

def job():
    print('I am working as scheduler....!')

def lunch_job():
    print("Take lunch break, time is : 2.30 PM")

def screen_break_job():
    print("Please take a small break, its been an hour seated")


schedule.every(1).minutes.do(job)
schedule.every().hour.do(screen_break_job)
schedule.every().day.at("14:30").do(lunch_job)
schedule.every().monday.do(job)
schedule.every().wednesday.at("13:15").do(job)
schedule.every().minute.at(":17").do(job)

while True:
    schedule.run_pending()
    time.sleep(1)

详情请参考schedule