Add compat file for Py26 OrderedDict.

moto/compat.py

@@ -0,0 +1,5 @@
+try:
+    from collections import OrderedDict  # flake8: noqa
+except ImportError:
+    # python 2.6 or earlier, use backport
+    from ordereddict import OrderedDict  # flake8: noqa

moto/dynamodb/models.py

@@ -3,13 +3,7 @@ from collections import defaultdict
 import datetime
 import json
 
-try:
-    from collections import OrderedDict
-except ImportError:
-    # python 2.6 or earlier, use backport
-    from ordereddict import OrderedDict
-
-
+from moto.compat import OrderedDict
 from moto.core import BaseBackend
 from .comparisons import get_comparison_func
 from .utils import unix_time

moto/dynamodb2/models.py

@@ -3,13 +3,7 @@ from collections import defaultdict
 import datetime
 import json
 
-try:
-    from collections import OrderedDict
-except ImportError:
-    # python 2.6 or earlier, use backport
-    from ordereddict import OrderedDict
-
-
+from moto.compat import OrderedDict
 from moto.core import BaseBackend
 from .comparisons import get_comparison_func
 from .utils import unix_time

moto/kinesis/models.py

@@ -1,16 +1,11 @@
 from __future__ import unicode_literals
 
 import boto.kinesis
+from moto.compat import OrderedDict
 from moto.core import BaseBackend
 from .exceptions import StreamNotFoundError, ShardNotFoundError
 from .utils import compose_shard_iterator, compose_new_shard_iterator, decompose_shard_iterator
 
-try:
-    from collections import OrderedDict
-except ImportError:
-    # python 2.6 or earlier, use backport
-    from ordereddict import OrderedDict
-
 
 class Record(object):
     def __init__(self, partition_key, data, sequence_number):

moto/sns/models.py

@@ -1,6 +1,5 @@
 from __future__ import unicode_literals
 
-from collections import OrderedDict
 import datetime
 import uuid
 
@@ -8,6 +7,7 @@ import boto.sns
 import requests
 import six
 
+from moto.compat import OrderedDict
 from moto.core import BaseBackend
 from moto.core.utils import iso_8601_datetime
 from moto.sqs import sqs_backends