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Re: datetime question

References <l5jk15$de$1@dont-email.me> <l5q9me$lk6$1@dont-email.me>
Date 2013-11-11 08:41 -0500
Subject Re: datetime question
From Joel Goldstick <joel.goldstick@gmail.com>
Newsgroups comp.lang.python
Message-ID <mailman.2377.1384177268.18130.python-list@python.org> (permalink)

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On Mon, Nov 11, 2013 at 4:57 AM, Νίκος Αλεξόπουλος
<nikos.gr33k@gmail.com> wrote:
> Στις 8/11/2013 11:11 μμ, ο/η Νίκος Αλεξόπουλος έγραψε:
>
>> Is there someway to write the following line even better with the
>> ability to detect daylight saving time by itself so i don't have to
>> alter the line manually when time changes?
>>
>> lastvisit = ( datetime.utcnow() + timedelta(hours=2) ).strftime(
>> '%y-%m-%d %H:%M:%S' )        # MySQL datetime format
>>
>> Thanks.
>
>
>
> Someone has an idea what to add to this line to automatically adjust itself

Three days ago Mark Lawrence pointed you to a stack overflow answer to
your question.  While it didn't suit your demand for a single line
answer, it could easily be made into a function which returned the
string format that you requested.  You've been around long enough to
try to work that out for yourself.  If you yourself had returned with
a one liner to perform what Mark showed you, I can imagine a lot of
people would be impressed at your dedication!

I think you are oversimplifying the problem.  I recall that you server
is in Germany, and you are in Greece.  If these are two different time
zones, I am guessing that the German time will be given.  Also, any
linux user who runs package updates regularly (thinking Ubuntu)
realizes that some file that starts with tz gets changed quite often.
This is because time zones are set by governments, and the date of
change from standard to daylight time can be differently, depending
upon the location and the governing body.

I pose this question to you:

Why not display UTC?  If it is so important to you to display local
time, why do you think that your host's local time is something that
is useful for a visitor?  Daylight savings time is more complicated
that you have suggested
> if DST happens?

If you insist upon displaying the local time of your server, you
should not be hardcoding in a 2 hour difference.  Let the python
library figure out the delta by giving the country code
> --
> https://mail.python.org/mailman/listinfo/python-list



-- 
Joel Goldstick
http://joelgoldstick.com

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Thread

datetime question Νίκος Αλεξόπουλος <nikos.gr33k@gmail.com> - 2013-11-08 23:11 +0200
  Re: datetime question Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-08 21:29 +0000
    Re: datetime question Νίκος Αλεξόπουλος <nikos.gr33k@gmail.com> - 2013-11-09 00:01 +0200
      Re: datetime question Joel Goldstick <joel.goldstick@gmail.com> - 2013-11-08 17:06 -0500
        Re: datetime question rurpy@yahoo.com - 2013-11-11 14:49 -0800
          Re: datetime question Joel Goldstick <joel.goldstick@gmail.com> - 2013-11-11 18:18 -0500
      Re: datetime question Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-08 22:18 +0000
      Re: datetime question Grant Edwards <invalid@invalid.invalid> - 2013-11-08 22:29 +0000
        Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-09 09:39 +1100
          Re: datetime question Roy Smith <roy@panix.com> - 2013-11-09 10:30 -0500
        Re: datetime question Gene Heskett <gheskett@wdtv.com> - 2013-11-09 10:39 -0500
        Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-10 09:25 +1100
      Re: datetime question Denis McMahon <denismfmcmahon@gmail.com> - 2013-11-08 22:49 +0000
        Re: datetime question Νίκος Αλεξόπουλος <nikos.gr33k@gmail.com> - 2013-11-09 01:02 +0200
          Re: datetime question Robert Kern <robert.kern@gmail.com> - 2013-11-08 23:23 +0000
          Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-09 10:30 +1100
          Re: datetime question Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-09 00:12 +0000
          Re: datetime question Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-09 12:45 +0000
            Re: datetime question Νίκος Αλεξόπουλος <nikos.gr33k@gmail.com> - 2013-11-09 15:43 +0200
              Re: datetime question unknown <unknown@unknown.com> - 2013-11-10 12:52 +0000
          Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-09 23:52 +1100
  Re: datetime question Gene Heskett <gheskett@wdtv.com> - 2013-11-09 19:55 -0500
  Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-10 19:47 +1100
  Re: datetime question Gene Heskett <gheskett@wdtv.com> - 2013-11-10 04:13 -0500
  Re: datetime question Νίκος Αλεξόπουλος <nikos.gr33k@gmail.com> - 2013-11-11 11:57 +0200
    Re: datetime question Joel Goldstick <joel.goldstick@gmail.com> - 2013-11-11 08:41 -0500
      Re: datetime question Roy Smith <roy@panix.com> - 2013-11-11 09:14 -0500
        Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-12 01:25 +1100
        Re: datetime question Joel Goldstick <joel.goldstick@gmail.com> - 2013-11-11 09:36 -0500
        Re: datetime question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-11-11 20:59 -0500
        Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-12 13:02 +1100
        Re: datetime question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-11-11 21:02 -0500
        Re: datetime question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-11-12 19:30 -0500
        Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-13 11:40 +1100
    Re: datetime question Denis McMahon <denismfmcmahon@gmail.com> - 2013-11-11 19:19 +0000
      Re: datetime question Ethan Furman <ethan@stoneleaf.us> - 2013-11-11 11:39 -0800
        Re: datetime question Grant Edwards <invalid@invalid.invalid> - 2013-11-11 20:45 +0000
        Re: datetime question mm0fmf <none@mailinator.com> - 2013-11-11 23:21 +0000
          Re: datetime question Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-11 23:48 +0000
            Re: datetime question Grant Edwards <invalid@invalid.invalid> - 2013-11-12 04:49 +0000
              Re: datetime question alex23 <wuwei23@gmail.com> - 2013-11-12 17:25 +1000
                Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-12 18:35 +1100
                Re: datetime question Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-12 09:20 +0000
              Re: datetime question Roy Smith <roy@panix.com> - 2013-11-12 09:18 -0500
  Re: datetime question Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-11-12 12:15 +0200
    Re: datetime question Andy Lawton <andy@andylawton.eu> - 2013-11-12 12:47 +0000
      Re: datetime question Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-11-12 15:32 +0200
        Re: datetime question Joel Goldstick <joel.goldstick@gmail.com> - 2013-11-12 09:03 -0500
          Re: datetime question Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-11-12 16:12 +0200
            Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-13 01:57 +1100
              Re: datetime question Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-11-12 17:24 +0200
                Re: datetime question Tim Chase <python.list@tim.thechases.com> - 2013-11-12 09:54 -0600
                Re: datetime question Ferrous Cranus <nikos.gr33k@gmail.com> - 2013-11-12 17:57 +0200
                Re: datetime question Tim Chase <python.list@tim.thechases.com> - 2013-11-12 10:12 -0600
                Re: datetime question William Ray Wing <wrw@mac.com> - 2013-11-12 11:14 -0500
                Re: datetime question Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-11-12 16:30 +0000
                Re: datetime question MRAB <python@mrabarnett.plus.com> - 2013-11-12 19:09 +0000
                Re: datetime question Joel Goldstick <joel.goldstick@gmail.com> - 2013-11-12 14:14 -0500
                Re: datetime question Denis McMahon <denismfmcmahon@gmail.com> - 2013-11-12 19:24 +0000
                Re: datetime question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-11-12 19:38 -0500
                Re: datetime question Chris Angelico <rosuav@gmail.com> - 2013-11-13 09:42 +1100
                Re: datetime question Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-11-12 19:37 -0500
                Re: datetime question MRAB <python@mrabarnett.plus.com> - 2013-11-13 01:08 +0000
                Re: datetime question Alister <alister.ware@ntlworld.com> - 2013-11-12 16:11 +0000
                Re: datetime question Roy Smith <roy@panix.com> - 2013-11-12 19:43 -0500
      Re: datetime question Denis McMahon <denismfmcmahon@gmail.com> - 2013-11-12 19:20 +0000

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