如何在Python中修改datetime.datetime.hour？

Question

我想计算一下从现在到明天12点之间的秒数。所以我需要明天12:00datetime获取对象。

这是伪代码：

today_time = datetime.datetime.now()
tomorrow = today_time + datetime.timedelta(days = 1)
tomorrow.hour = 12
result = (tomorrow-today_time).total_seconds()

但它会引起这个错误：

AttributeError: attribute 'hour' of 'datetime.datetime' objects is not writable

如何修改小时数或如何获取明日12:00datetime对象？

Answer 1

试试这个：

tomorrow = datetime.datetime(tomorrow.year, tomorrow.month, tomorrow.day, 12, 0, 0)

Answer 2

使用^{} method基于现有对象生成新的datetime对象：

tomorrow = tomorrow.replace(hour=12)

Return a datetime with the same attributes, except for those attributes given new values by whichever keyword arguments are specified. Note that tzinfo=None can be specified to create a naive datetime from an aware datetime with no conversion of date and time data.