[Python-au] time module wierdness on windows7 with python-2.6.2

Warwick Prince warwickp at mushroomsys.com
Mon Jul 23 06:55:30 UTC 2012


Hi

Have you checked your Windows time zone and location settings?  May have been trashed in the upgrade?  Maybe change to another and the back to Dtdney again and the test Python's view.

Cheers
Warwick

Warwick A. Prince
Mushroom Systems International Pty. Ltd.

On 23/07/2012, at 4:36 PM, raf <raf at raf.org> wrote:

> hi,
> 
> i've just noticed the following wierdness with the time module
> (python-2.6.2) on three windows7 hosts and one windowsxp host
> (but not another xp host) and i'm wondering if anyone else has
> encountered this and knows how to fix it.
> 
> the first problem is that time.timezone contains 0 instead of
> the usual -36000 (for sydney).
> 
> the second problem is that time.localtime(...).is_dst is wrong.
> time.tzname is also wrong but i care less about that.
> 
> the demonstration code and output is below. i can fake the
> time.timezone being absent but i can't see any good way to
> deal with localtime not knowing when it's daylight savings.
> 
> this all worked before the upgrades to windows7 (even though
> there is one xp host where it isn't working anymore - i don't
> know what makes the two xp hosts different).
> 
> any help would be appreciated.
> 
> cheers,
> raf
> 
> #!/usr/bin/env python
> import sys, time
> print('sys.platform = %r' % sys.platform)
> print('time.timezone = %r (should be -36000)' % time.timezone)
> print('time.tzname = %r (should be (\'EST\', \'EST\' or similar))' % (time.tzname,))
> print('dst in june = %r (should be 0 (for Australia/Sydney))' % time.localtime(time.mktime((2012, 6, 1, 0, 0, 0, 0, 0, -1))).tm_isdst)
> print('dst in december = %r (should be 1 (for Australia/Sydney))' % time.localtime(time.mktime((2012, 12, 1, 0, 0, 0, 0, 0, -1))).tm_isdst)
> 
> # Max OS X 10.6.8 (correct)
> # sys.platform = 'darwin'
> # time.timezone = -36000 (should be -36000)
> # time.tzname = ('EST', 'EST') (should be ('EST', 'EST') or similar)
> # dst in june = 0 (should be 0 (for Australia/Sydney))
> # dst in december = 1 (should be 1 (for Australia/Sydney))
> 
> # debian-6.0 (correct)
> # sys.platform = 'linux2'
> # time.timezone = -36000 (should be -36000)
> # time.tzname = ('EST', 'EST') (should be ('EST', 'EST') or similar)
> # dst in june = 0 (should be 0 (for Australia/Sydney))
> # dst in december = 1 (should be 1 (for Australia/Sydney))
> 
> # Windows XP Professional Service Pack 3 (correct)
> # sys.platform = 'win32'
> # time.timezone = -36000 (should be -36000)
> # time.tzname = ('AUS Eastern Standard Time', 'AUS Eastern Daylight Time') (should be ('EST', 'EST') or similar)
> # dst in june = 0 (should be 0 (for Australia/Sydney))
> # dst in december = 1 (should be 1 (for Australia/Sydney))
> 
> # Windows 7 and Windows XP Professional Service Pack 3 (incorrect)
> # sys.platform = 'win32'
> # time.timezone = 0 (should be -36000)
> # time.tzname = ('Aus', 'tra') (should be ('EST', 'EST') or similar)
> # dst in june = 1 (should be 0 (for Australia/Sydney))
> # dst in december = 0 (should be 1 (for Australia/Sydney))
> 
> 
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