python:如何处理时间戳(ISO8601)

问题描述

我必须在 python 中处理表示 iso8601 时间戳的字符串.

因此，我的时间戳字符串采用以下形式:

timestamp = "2011-08-18T10:29:47+03:00"

目前我正在使用以下方法在 python 中转换它们:

timestamp = timestamp[:-6]时间戳 = datetime.datetime.strptime(timestamp, "%Y-%m-%dT%H:%M:%S")

但是这样我就丢失了所有关于时区的信息.我在 s-o 上看到了很多关于时间戳和 python 的例子，不幸的是没有人也保留时区，或者只是使用以下方法恢复时区延迟:

delay = 时间戳[-6:]

我也试过:

timestamp = "2011-08-18T10:29:47+03:00"时间戳 = datetime.datetime.strptime(timestamp, "%Y-%m-%dT%H:%M:%S%z")

但它回来了

ValueError: 'z' 是格式为 '%Y-%m-%dT%H:%M:%S%z' 的错误指令

你能提供一些见解吗?

解决方案

python iso8601模块是用一个很棒的 parse_date 方法构建的，可以处理时区信息:

>>>进口iso8601>>>iso8601.parse_date("2007-01-25T12:00:00Z")datetime.datetime(2007, 1, 25, 12, 0, tzinfo=)>>>iso8601.parse_date("2011-08-18T10:29:47+03:00")datetime.datetime(2011, 8, 18, 10, 29, 47, tzinfo=)

如果您想将其转换为其他时区，请使用 astimezone(tz) 方法

如果您需要获取 UTC 日期时间，您可以使用 utctimetuple() 方法.

I have to deal in python with strings representing iso8601 timestamps.

My timestamps string are therefore in the following form:

timestamp = "2011-08-18T10:29:47+03:00"

Currently I'm converting them in python using:

timestamp = timestamp[:-6]
timestamp = datetime.datetime.strptime(timestamp, "%Y-%m-%dT%H:%M:%S")

But in this way I lose all the information about the time zone.I have seen many examples here on s-o about timestamps and python, unfortunately no one was preserving the timezone as well, or just recover the time zone delay using:

delay = timestamp[-6:]

I have also tried:

timestamp = "2011-08-18T10:29:47+03:00"
timestamp = datetime.datetime.strptime(timestamp, "%Y-%m-%dT%H:%M:%S%z")

but it returned

ValueError: 'z' is a bad directive in format '%Y-%m-%dT%H:%M:%S%z'

Can you give some insight?

解决方案

The python iso8601 module is built with a wonderful parse_date method that can handle timezone info :

>>> import iso8601
>>> iso8601.parse_date("2007-01-25T12:00:00Z")
datetime.datetime(2007, 1, 25, 12, 0, tzinfo=<iso8601.iso8601.Utc ...>)

>>> iso8601.parse_date("2011-08-18T10:29:47+03:00")
datetime.datetime(2011, 8, 18, 10, 29, 47, tzinfo=<FixedOffset '+03:00'>)

If you want to convert it in another timezone, use the astimezone(tz) method

If you need to get the UTC datetime you can use the utctimetuple() method.

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