Question

由于某种原因，日期时间对象伤害了我的头脑。我正在写作如何将日期时间对象移动12小时。我还需要知道如何判断两个日期时间对象是否相差1分钟或更长时间。

Answer 1

datetime库有一个timedelta对象专门用于此类事情：

import datetime

mydatetime = datetime.now() # or whatever value you want
twelvelater = mydatetime + datetime.timedelta(hours=12)
twelveearlier = mydatetime - datetime.timedelta(hours=12)

difference = abs(some_datetime_A - some_datetime_B)
# difference is now a timedelta object

# there are a couple of ways to do this comparision:
if difference > timedelta(minutes=1):
    print "Timestamps were more than a minute apart"

# or: 
if difference.total_seconds() > 60:
    print "Timestamps were more than a minute apart"

Answer 2

你可以使用datetime.timedelta来做这样的事情。

from datetime import timedelta

datetime算术类似于普通算法：您可以将timedelta对象添加到datetime对象以转移其时间：

dt = # some datetime object
dt_plus_12 = dt + timedelta(hours=12)

此外，您可以减去两个datetime个对象，以获得表示它们之间差异的timedelta：

dt2 = # some other datetime object
ONE_MINUTE = timedelta(minutes=1)
if abs(dt2 - dt) > ONE_MINUTE:
    # do something

如何在python中将datetime对象移动12个小时

2 个答案: