在python中定时发送电子邮件提醒 [英] Timed email reminder in python

问题描述

我写了一个python脚本，允许用户输入一个消息，他的电子邮件和时间，他们希望发送电子邮件。这都存储在一个mysql数据库中。

但是，如何让脚本在上述时间和日期执行？它需要一个cron工作吗？我的意思是说在2月20日2点15分，脚本将在数据库中搜索2:15的所有时间，并发送这些电子邮件。但是在2:16的电子邮件呢？

我正在使用提供的共享主机，所以不能有一个持续运行的脚本。

谢谢

解决方案

如果您不能持续运行脚本，则必须触发它，依靠您的操作系统内部。在一个unix环境中，一个cron工作，像你自己的状态一样，会做这个伎俩。

设置cron来运行脚本，使脚本等待给定的时间，然后继续运行和发送，直到下一封电子邮件超过此给定的时间。然后让您的脚本添加一个新的cron工作，以获得新的唤醒时间。

I have written up a python script that allows a user to input a message, his email and the time and they would like the email sent. This is all stored in a mysql database.

However, how do I get the script to execute on the said time and date? will it require a cron job? I mean say at 2:15 on april 20th, the script will search the database for all times of 2:15, and send out those emails. But what about for emails at 2:16?

I am using a shared hosting provided, so cant have a continously running script.

Thanks

解决方案

If you cannot have a continuously running script, something must trigger it, so that would have to rely on your OS internals. In a unix environment a cron job, as you self state, would do the trick.

Set cron to run the script, and make the script wait for a given time and then continue running and sending until the next email is more than this given time away. Then make your script add a new cron job for a new wakeup time.

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