在Windows上获取本地时区名称(Python 3.9 zoneinfo)

问题描述

查看 zoneinfo Python 3.9中的模块，我想知道它是否还提供了一个方便的选项来检索Windows上的本地时区(操作系统设置).

Checking out the zoneinfo module in Python 3.9, I was wondering if it also offers a convenient option to retrieve the local timezone (OS setting) on Windows.

在Linux上，您可以这样做

On Linux, you can do

from datetime import datetime
from zoneinfo import ZoneInfo

naive = datetime(2020, 6, 11, 12)
aware = naive.replace(tzinfo=ZoneInfo('localtime'))

但是在Windows上会抛出

but on Windows, that throws

所以我仍然必须使用第三方库吗?例如

so would I still have to use a third-party library? e.g.

import time
import dateutil

tzloc = dateutil.tz.gettz(time.tzname[time.daylight])
aware = naive.replace(tzinfo=tzloc)

由于 time.tzname [time.daylight] 返回一个本地化名称(在我的情况下为德国语，例如MitteleuropäischeSommerzeit")，所以这也不起作用:

Since time.tzname[time.daylight] returns a localized name (German in my case, e.g. 'Mitteleuropäische Sommerzeit'), this doesn't work either:

aware = naive.replace(tzinfo=ZoneInfo(tzloc))

有什么想法吗?

p.s.在Python<上尝试3.9，使用 backports (另请参见此答案):

p.s. to try this on Python < 3.9, use backports (see also this answer):

pip install backports.zoneinfo
pip install tzdata # needed on Windows

推荐答案

您无需使用zoneinfo即可使用系统本地时区.调用 None (或省略)时区即可.rel ="nofollow noreferrer"> datetime.astimezone .

You don't need to use zoneinfo to use the system local time zone. You can simply pass None (or omit) the time zone when calling datetime.astimezone.

从文档中

因此:

from datetime import datetime

naive = datetime(2020, 6, 11, 12)
aware = naive.astimezone()

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