Python 循环运行特定秒数 [英] Python loop to run for certain amount of seconds

问题描述

我有一个 while 循环，我希望它继续运行 15 分钟.目前是:

I have a while loop, and I want it to keep running through for 15 minutes. it is currently:

while True:
    #blah blah blah

(这会运行，然后重新启动.我需要它继续执行此操作，除非在 15 分钟后退出循环)

(this runs through, and then restarts. I need it to continue doing this except after 15 minutes it exits the loop)

谢谢！

推荐答案

试试这个:

import time

t_end = time.time() + 60 * 15
while time.time() < t_end:
    # do whatever you do

这将运行 15 分钟 x 60 秒 = 900 秒.

This will run for 15 min x 60 s = 900 seconds.

函数 time.time 返回自 1970 年 1 月 1 日以来的当前时间(以秒为单位).该值是浮点数，因此您甚至可以以亚秒级精度使用它.开始时，t_end 值计算为现在"+ 15 分钟.循环会一直运行，直到当前时间超过这个预设的结束时间.

Function time.time returns the current time in seconds since 1st Jan 1970. The value is in floating point, so you can even use it with sub-second precision. In the beginning the value t_end is calculated to be "now" + 15 minutes. The loop will run until the current time exceeds this preset ending time.

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