@api.one
    @api.depends('listing_type')
    def _return_listing_duration(self):
        if not self.listing_type:
            return
        if self.listing_type == 'Chinese':
            self.listing_duration = [
                ('Days_1', '1 days'),
                ('Days_3', '3 days'),
                ('Days_5', '5 days'),
                ('Days_7', '7 days'),
                ('Days_10', '10 days')
            ]
        elif self.listing_type == 'FixedPriceItem':
            self.listing_duration = [
                ('Days_3', '3 days'),
                ('Days_5', '5 days'),
                ('Days_7', '7 days'),
                ('Days_10', '10 days'),
                ('Days_30', '30 days'),
                ('GTC', 'GTC')
            ]





raise ValueError("Wrong value for %s: %r" % (self, value))