Fix deprecation warnings for collections.abc imports (#525)

Author: adamchainz

boxsdk/object/api_json_object.py

@@ -2,12 +2,17 @@
 
 from __future__ import unicode_literals, absolute_import
 
-from collections import Mapping
+import sys
 from abc import ABCMeta
 
 from .base_api_json_object import BaseAPIJSONObject, BaseAPIJSONObjectMeta
 from ..util.compat import with_metaclass
 
+if sys.version_info >= (3, 3):
+    from collections.abc import Mapping  # pylint:disable=no-name-in-module,import-error
+else:
+    from collections import Mapping  # pylint:disable=no-name-in-module,import-error
+
 
 class APIJSONObjectMeta(BaseAPIJSONObjectMeta, ABCMeta):
     """

boxsdk/pagination/box_object_collection.py

@@ -2,16 +2,21 @@
 
 from __future__ import unicode_literals
 
+import sys
 from abc import ABCMeta, abstractmethod
-import collections
 
 from six import add_metaclass
 
 from boxsdk.pagination.page import Page
 
+if sys.version_info >= (3, 3):
+    from collections.abc import Iterator  # pylint:disable=no-name-in-module,import-error
+else:
+    from collections import Iterator  # pylint:disable=no-name-in-module,import-error
+
 
 @add_metaclass(ABCMeta)
-class BoxObjectCollection(collections.Iterator, object):
+class BoxObjectCollection(Iterator):
     """
     An iterator that represents a collection of Box objects (BaseObject).
 

boxsdk/pagination/page.py

@@ -2,11 +2,16 @@
 
 from __future__ import unicode_literals, absolute_import
 
-from collections import Sequence
 import copy
+import sys
 
+if sys.version_info >= (3, 3):
+    from collections.abc import Sequence  # pylint:disable=no-name-in-module,import-error
+else:
+    from collections import Sequence  # pylint:disable=no-name-in-module,import-error
 
-class Page(Sequence, object):
+
+class Page(Sequence):
     """
     A sequence of BaseObjects that belong to a page returned from a paging api call.
 

boxsdk/util/log.py

@@ -2,7 +2,6 @@
 
 from __future__ import unicode_literals
 
-from collections import Mapping
 import logging
 try:
     from logging import NullHandler
@@ -14,6 +13,11 @@ def emit(self, record):
 
 from six import string_types, iteritems
 
+if sys.version_info >= (3, 3):
+    from collections.abc import Mapping  # pylint:disable=no-name-in-module,import-error
+else:
+    from collections import Mapping  # pylint:disable=no-name-in-module,import-error
+
 
 _no_logger = object()