country.py

from trytond.model import fields
from trytond.pool import PoolMeta


__all__ = ['Country']


class Country(metaclass=PoolMeta):
    __name__ = 'country.country'

    active = fields.Boolean('Active')
    sequence = fields.Integer('Sequence')
    
    @classmethod
    def __setup__(cls):
        super(Country, cls).__setup__()
        cls._order.insert(0, ('sequence', 'ASC'))