与系统时钟同步的每5分钟在python中运行一个函数的最佳方法是什么? [英] What is the best way to run a function every 5 minutes in python synced with system clock?

问题描述

我想每5分钟运行一次函数，并使其与时钟同步.如果我使用time.sleep(60 * 5)，则时间开始漂移，因为我的函数增加了一点处理时间.这是使我的函数与时钟同步运行的好方法，还是python中有更好的方法?

I want to run a function every 5 minutes and have it synced with the clock. If I use time.sleep(60*5), the time starts to drift because my function adds a tiny bit of processing time. Is this a good way of running my function synced with the clock or is there a better way in python?

def run(condition):

    def task():
        #run data here
        pass

    runOnce = True

    while condition:
        if dt.datetime.now().minute % 5 == 0 and dt.datetime.now().second == 0 and runOnce:
            runOnce = False
            task()

        elif dt.datetime.now().second != 0 and not runOnce:
            runOnce = True

        else:
            time.sleep(0.5)




run(True)

推荐答案

您可以尝试

You can try APScheduler. It uses python's datetime module to control the execution thus should be largely independent of your code's peculiarities.

from apscheduler.scheduler import BlockingScheduler

@sched.scheduled_job('interval', id='my_job_id', minutes=5)
def job_function():
    print("Hello World")

Python还有一个内置的调度程序，python的sched模块，有点简单的api，应该以相同的方式执行，并且可以避免维护额外依赖项带来的麻烦.

Python also has an inbuilt scheduler, python's sched module with a bit simpler api that should perform in the same way and save you some hassle from maintaining an extra dependency.

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