From 67f2da7fbcb0749162c7d64004b34d40659977dc Mon Sep 17 00:00:00 2001
From: zhubonan <33688599+zhubonan@users.noreply.github.com>
Date: Wed, 11 Jul 2018 17:18:41 +0100
Subject: [PATCH] fix bug in mixins.py when copying node

`_sealed` attribute is not copied in superclass `Node.copy()` method and but here it tries to delete it again, which throws an `AttributeError` exception. We should use `clone._iter_updatable_attributes()` instead for deleting unwanted updatable attributes of the _clone_.
---
 aiida/orm/mixins.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/aiida/orm/mixins.py b/aiida/orm/mixins.py
index ffe5ad795d..6c6cb18e3a 100644
--- a/aiida/orm/mixins.py
+++ b/aiida/orm/mixins.py
@@ -96,7 +96,7 @@ def copy(self, include_updatable_attrs=False):
 
         # Remove the updatable attributes
         if not include_updatable_attrs:
-            for key, value in self._iter_updatable_attributes():
+            for key, value in clone._iter_updatable_attributes():
                 clone._del_attr(key)
 
         return clone