Fixes for python 2.7

graphene/relay/connection.py

@@ -1,6 +1,10 @@
 import re
 from collections import OrderedDict
-from collections.abc import Iterable
+try:
+    from collections.abc import Iterable
+except ImportError:
+    from collections import Iterable
+
 from functools import partial
 
 from graphql_relay import connection_from_list

graphene/types/field.py

@@ -1,6 +1,10 @@
 import inspect
 from collections import OrderedDict
-from collections.abc import Mapping
+try:
+    from collections.abc import Mapping
+except ImportError:
+    from collections import Mapping
+
 from functools import partial
 
 from .argument import Argument, to_arguments

graphene/utils/crunch.py

@@ -1,5 +1,8 @@
 import json
-from collections.abc import Mapping
+try:
+    from collections.abc import Mapping
+except ImportError:
+    from collections import Mapping
 
 
 def to_key(value):

graphene/utils/deduplicator.py

@@ -1,5 +1,8 @@
 from collections import OrderedDict
-from collections.abc import Mapping
+try:
+    from collections.abc import Mapping
+except ImportError:
+    from collections import Mapping
 
 
 def deflate(node, index=None, path=None):