def __init__(self, columns_count):
        self.columns_count = columns_count
        self.index = editor.Property(u'').validate(nagare_validator.to_int)
        self.title = editor.Property(u'')
        self.title.validate(lambda v: nagare_validator.to_string(v).not_empty(_(u'''Can't be empty''')))
        self.nb_cards = editor.Property(u'').validate(self.validate_nb_cards)
Initialization
dataset/ETHPy150Open Net-ng/kansha/kansha/column/comp.py/NewColumnEditor.__init__