add fiel code shipment detailed report

shipment.py

@@ -125,29 +125,29 @@ class InternalShipment(metaclass=PoolMeta):
                             'company': move.company.id,
                             'state': move.state,
                         }])
-                        
+
     @fields.depends('effective_date', 'from_location', 'to_location')
     def on_change_with_effective_start_date(self):
         if self.effective_date:
             return self.effective_date
-    
+
     @classmethod
     def create(cls, vlist):
         shipments = super().create(vlist)
         cls._set_move_effective_date(shipments)
         return shipments
-    
+
     @classmethod
     def write(cls, *args):
         super().write(*args)
         cls._set_move_effective_date(sum(args[::2], []))
-        
+
     @property
     def _move_effective_date(self):
         '''
         Return the effective date for incoming moves and inventory_moves
         '''
-        return self.effective_start_date, self.effective_date 
+        return self.effective_start_date, self.effective_date
 
     @classmethod
     def _set_move_effective_date(cls, shipments):
@@ -178,7 +178,7 @@ class InternalShipment(metaclass=PoolMeta):
                             })
         if to_write:
             Move.write(*to_write)
-            
+
     def load_current_stock(self):
         pool = Pool()
         Internal = pool.get('stock.shipment.internal')
@@ -212,7 +212,7 @@ class InternalShipment(metaclass=PoolMeta):
                 'moves': [('create', moves_target)],
             })
         return 'end'
-    
+
 
 class CreateInternalShipmentStart(ModelView):
     'Create Internal Shipment Start'
@@ -493,7 +493,7 @@ class ShipmentDetailedReport(Report):
                                               )
         shipments_id = [model + ',' + str(sh['id']) for sh in shipments]
         fields_names = [
-            'product.account_category.name', 'product.name', 'product.cost_price',
+            'product.account_category.name', 'product.name', 'product.code', 'product.cost_price',
             'quantity', 'to_location.name', 'from_location.name', 'shipment.reference',
             'effective_date', 'shipment.number'
         ]
@@ -541,6 +541,7 @@ class ShipmentDetailedReport(Report):
                 'party': party,
                 'oc': oc,
                 'product': product['name'],
+                'code': product['code'],
                 'cost_price': cost_price,
                 'category': category,
                 'category_ad': category_ad,