如何在Python中比较时间？ [英] How to compare times in Python?

问题描述

我看到可以进行日期比较，还有 datetime.timedelta（），但是我很努力地寻找如何检查当前时间（ datetime.datetime.now（））比指定时间（例如上午8点）早，晚或相同，而与日期无关。

I see that date comparisons can be done and there's also datetime.timedelta(), but I'm struggling to find out how to check if the current time (datetime.datetime.now()) is earlier, later or the same than a specified time (e.g. 8am) regardless of the date.

推荐答案

您不能将一个特定的时间点（例如现在）与一个固定的重复发生的事件（每次早上8点发生）进行比较

You can't compare a specific point in time (such as "right now") against an unfixed, recurring event (8am happens every day).

您可以检查现在是在今天的 上午8点之前还是之后：

You can check if now is before or after today's 8am:

>>> import datetime
>>> now = datetime.datetime.now()
>>> today8am = now.replace(hour=8, minute=0, second=0, microsecond=0)
>>> now < today8am
True
>>> now == today8am
False
>>> now > today8am
False

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