se cambia el parametro sale en set_number

sale.py

@@ -96,7 +96,6 @@ class Sale(metaclass=PoolMeta):
 
         return [Contract.__name__]
 
-
     @classmethod
     def get_origin_contract(cls):
         Model = Pool().get('ir.model')
@@ -126,7 +125,7 @@ class Sale(metaclass=PoolMeta):
         Config = pool.get('optical_equipment.configuration')
         config = Config(1)
         for sale in sales:
-            if config.equipment_sequence != None:
+            if config.equipment_sequence is not None:
                 if not sale.quote_number:
                     try:
                         sale.quote_number = config.sale_quote_number.get()
@@ -207,7 +206,7 @@ class Sale(metaclass=PoolMeta):
                 sale.state = "confirmed"
                 sale.save()
 
-        cls.set_number([sale])
+        cls.set_number(sales)
         with Transaction().set_context(
                 queue_name='sale',
                 queue_scheduled_at=config.sale_process_after):
@@ -222,7 +221,6 @@ class SaleLine(metaclass=PoolMeta):
     unit_digits = fields.Function(fields.Integer('Unit Digits'),
                                   'on_change_with_unit_digits')
 
-    
     @classmethod
     def __setup__(cls):
         super(SaleLine, cls).__setup__()
@@ -233,13 +231,11 @@ class SaleLine(metaclass=PoolMeta):
         cls.product.domain.append(If(Eval('_parent_sale.sale_type') == 'replaces',
                                      [('replacement', '=', True)], []))
 
-        
     def on_change_with_unit_digits(self, name=None):
         if self.unit:
             return self.unit.digits
         return 2
 
-
     @fields.depends('product', 'unit', 'quantity', 'sale',
                     '_parent_sale.party', '_parent_sale.sale_type', methods=['_get_tax_rule_pattern',
                                                                              '_get_context_sale_price', 'on_change_with_amount'])
@@ -317,7 +313,6 @@ class SaleLine(metaclass=PoolMeta):
         if (shipment_type == 'out') != (self.quantity >= 0):
             return
 
-
         quantity = (self._get_move_quantity(shipment_type)
                     - self._get_shipped_quantity(shipment_type))
 
@@ -351,12 +346,14 @@ class SaleLine(metaclass=PoolMeta):
 
         return move
 
+
 class SaleDate(ModelView):
     'Confirmacíon Fecha de Venta'
     __name__ = 'optical_equipment.confirm_sale_date.form'
 
     sale_date = fields.Date("Fecha Venta", required=True)
 
+
 class ConfirmSaleDate(Wizard):
     'Confirmacíon Fecha de Venta'
     __name__ = 'optical_equipment.confirm_sale_date'
@@ -376,4 +373,3 @@ class ConfirmSaleDate(Wizard):
         self.record.sale_date = self.start.sale_date
         self.record.state = 'processing'
         self.record.save()
-