在Python中将时区偏移量应用于日期时间 [英] Apply timezone offset to datetime in Python

问题描述

对于给定的日期字符串(例如2009-01-01T12:00:00+0100)，我想要UTC日期时间对象.

For a given date string such as 2009-01-01T12:00:00+0100 I want the UTC datetime object.

from datetime import datetime 
datetime.strptime("2013-03-21T14:19:42+0100", "%Y-%m-%dT%H:%M:%S%z")

返回

datetime.datetime(2013, 3, 21, 14, 19, 42, tzinfo=datetime.timezone(datetime.timedelta(0, 3600)))

我不敢相信datetime或pandas中没有方法将与时区相关的偏移量应用于日期时间并返回纯UTC日期时间.

I cannot believe there is no method in datetime or pandas for applying the timezone-related offset to the datetime and returning plain UTC datetime.

如何应用tzinfo偏移量/增量，以使所得时区为普通UTC(tzinfo=None)?

How can I apply the tzinfo offset/delta, so that the resulting timezone is plain UTC (tzinfo=None)?

推荐答案

这感觉有点脏，但确实有效

This feels a bit dirty but it does work

from datetime import datetime
orig_dt = datetime.strptime("2013-03-21T14:19:42+0100", "%Y-%m-%dT%H:%M:%S%z")  # datetime.datetime(2013, 3, 21, 14, 19, 42, tzinfo=datetime.timezone(datetime.timedelta(0, 3600)))
utc_time_value = orig_dt - orig_dt.utcoffset()
utc_dt = utc_time_value.replace(tzinfo=None)  # datetime.datetime(2013, 3, 21, 13, 19, 42)

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