first commit

modules/account_stock_shipment_cost/product.py

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+# 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
+from trytond.pyson import Eval
+
+
+class Template(metaclass=PoolMeta):
+    __name__ = 'product.template'
+    shipment_cost = fields.Boolean(
+        "Shipment Cost",
+        states={
+            'invisible': Eval('type') != 'service',
+            })
+
+
+class Product(metaclass=PoolMeta):
+    __name__ = 'product.product'