1 if confirm('use Europe/Paris as timezone?'):

     2     timezone = 'Europe/Paris'

     3 else:

     4     import pytz

     5     while True:

     6         timezone = raw_input('enter your timezone')

     7         if timezone in pytz.common_timezones:

     8             break

     9 

    10 dbdriver = repo.system_source.dbdriver

    11 if dbdriver == 'postgres':

    12     sql("SET TIME ZONE '%s'" % timezone)

    13 

    14 for entity in schema.entities():

    15     if entity.final:

    16         continue

    17     change_attribute_type(entity.type, 'creation_date', 'TZDatetime', ask_confirm=False)

    18     change_attribute_type(entity.type, 'modification_date', 'TZDatetime', ask_confirm=False)

    19 

    20 if dbdriver == 'postgres':

    21     sql("SET TIME ZONE UTC")