Question

我有这种格式的日期Thu, 18 Feb 2016 15:33:10 +0200

我希望它们转换为2016-02-12 08:39:09.653475

如何使用Python的标准库实现这一目标？

Answer 1

您可以使用datetime模块执行此操作，如下所示：

from datetime import datetime

d = 'Thu, 18 Feb 2016 15:33:10 +0200'
datetime.strptime(d, '%a, %d %b %Y %H:%M:%S %z').strftime('%Y-%m-%d %H:%M:%S.%f')

或者在python2中你可以使用：

from datetime import datetime
from dateutil.parser import parse

d = 'Thu, 18 Feb 2016 15:33:10 +0200'
datetime.strftime(parse(d), '%Y-%m-%d %H:%M:%S.%f')

或者如果需要坚持使用标准库，请查看J.F.Sebastian在How to parse dates with -0400 timezone string in python?的评论

Answer 2

点击此链接How to print date in a regular format in Python?

import time
import datetime

print "Time in seconds since the epoch: %s" %time.time()
print "Current date and time: " , datetime.datetime.now()
print "Or like this: " ,datetime.datetime.now().strftime("%y-%m-%d-%H-%M")


print "Current year: ", datetime.date.today().strftime("%Y")
print "Month of year: ", datetime.date.today().strftime("%B")
print "Week number of the year: ", datetime.date.today().strftime("%W")
print "Weekday of the week: ", datetime.date.today().strftime("%w")
print "Day of year: ", datetime.date.today().strftime("%j")
print "Day of the month : ", datetime.date.today().strftime("%d")
print "Day of week: ", datetime.date.today().strftime("%A")

这将打印出类似这样的内容：

Time in seconds since the epoch:    1349271346.46
Current date and time:              2012-10-03 15:35:46.461491
Or like this:                       12-10-03-15-35
Current year:                       2012
Month of year:                      October
Week number of the year:            40
Weekday of the week:                3
Day of year:                        277
Day of the month :                  03
Day of week:                        Wednesday

Answer 3

要仅使用stdlib解析输入日期格式，您可以使用email.utils包：

>>> from datetime import datetime, timedelta
>>> from email.utils import parsedate_tz, mktime_tz
>>> timestamp = mktime_tz(parsedate_tz('Thu, 18 Feb 2016 15:33:10 +0200'))
>>> utc_time = datetime(1970, 1, 1) + timedelta(seconds=timestamp)
>>> str(utc_time)
'2016-02-18 13:33:10'

其中str(dt)相当于dt.isoformat(' ')。

如果你需要支持闰秒; （假设您的平台支持它们）使用tt = time.gmtime(timestamp)和time.strftime('%Y-%m-%d %H:%M:%S', tt)。注意：time.gmtime()可能在不同平台上有不同的限制（可能小于datetime的限制。）

在Python 2.7中将电子邮件（rfc 2822）日期字符串转换为另一种格式（ISO 8601时间戳）

3 个答案: