From dbd9a41971f0c1c571f2bab268bb75f149e53ef0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20Krier?= <ced@b2ck.com>
Date: Sat, 1 Sep 2018 01:02:04 +0200
Subject: [PATCH] Improve ModelStorage.copy

* Allow callable in copy default
* Support dotted notation in copy default
* Use setdefault in copy
* Copy default when needed
* Do not set default state in copy
* Use callable and dotted notation in copy default

issue5576
issue7648
review72291002
---
 stock.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/stock.py b/stock.py
index cb4d5f8fe1..315e6ac6d8 100644
--- a/stock.py
+++ b/stock.py
@@ -99,8 +99,8 @@ class Package(metaclass=PoolMeta):
             default = {}
         else:
             default = default.copy()
-        default.setdefault('shipping_reference')
-        default.setdefault('shipping_label')
+        default.setdefault('shipping_reference', None)
+        default.setdefault('shipping_label', None)
         return super(Package, cls).copy(packages, default=default)