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-rw-r--r--lib/ansible/playbook/attribute.py2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/ansible/playbook/attribute.py b/lib/ansible/playbook/attribute.py
index 73e73ab0..692aa9a7 100644
--- a/lib/ansible/playbook/attribute.py
+++ b/lib/ansible/playbook/attribute.py
@@ -19,6 +19,8 @@
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
+from copy import copy, deepcopy
+
from ansible.utils.sentinel import Sentinel
_CONTAINERS = frozenset(('list', 'dict', 'set'))