I solved this problem by putting parameter timezone=True in every 
DateTime Column.
Thanks anyway. :-)
jo

[email protected] wrote:

>lookup the group, there was someone getting similar error about 
>timezones last month or so
>
>On Tuesday 30 December 2008 18:09:18 jo wrote:
>  
>
>>Hi all,
>>
>>I have this error:
>>
>>    TypeError: can't compare offset-naive and offset-aware
>>datetimes
>>
>>in the file
>>"/usr/lib/python2.4/site-packages/sqlalchemy/orm/mapper.py", at
>>line 1263, when it compares datetimes...
>>
>>    v != params.get_original(c.key)
>>
>>this is the value returned by params.get_original(c.key):
>>    datetime.datetime(2008, 12, 30, 15, 44, 31,
>>418607,tzinfo=<psycopg2.tz.FixedOffsetTimezone object at
>>0xbd33e4c>)
>>
>>and this is the value of v:
>>    datetime.datetime(2008, 12, 30, 12, 59, 49, 742472)
>>
>>tahnks for any help,
>>
>>jo
>>
>>    
>>
>
>>
>
>  
>


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