Initial import from Docker volume

modules/purchase_shipment_cost/carrier.py

@@ -0,0 +1,15 @@
+# This file is part of Tryton.  The COPYRIGHT file at the top level of
+# this repository contains the full copyright notices and license terms.
+from trytond.model import fields
+from trytond.pool import PoolMeta
+
+
+class Carrier(metaclass=PoolMeta):
+    __name__ = 'carrier'
+    carrier_cost_allocation_method = fields.Selection([
+            ('value', 'By Value'),
+            ], 'Carrier Cost Allocation Method', required=True)
+
+    @staticmethod
+    def default_carrier_cost_allocation_method():
+        return 'value'