Make sure Base attributes are copied cleanly

Fixes #12882
This commit is contained in:
James Cammarata 2015-10-26 12:09:31 -04:00
parent 8f77dd1cf2
commit 677a2f95e5

View file

@ -19,6 +19,7 @@
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import collections
import itertools
import operator
import uuid
@ -247,7 +248,13 @@ class Base:
new_me = self.__class__()
for name in self._get_base_attributes():
setattr(new_me, name, getattr(self, name))
attr_val = getattr(self, name)
if isinstance(attr_val, collections.Sequence):
setattr(new_me, name, attr_val[:])
elif isinstance(attr_val, collections.Mapping):
setattr(new_me, name, attr_val.copy())
else:
setattr(new_me, name, attr_val)
new_me._loader = self._loader
new_me._variable_manager = self._variable_manager