'Set the font weight.  Options are: A numeric value in the
range 0-1000 or one of \'light\', \'normal\', \'regular\', \'book\',
\'medium\', \'roman\', \'semibold\', \'demibold\', \'demi\', \'bold\',
\'heavy\', \'extra bold\', \'black\''

def get_weight(self):

    return self._weight
