Move `importlib` fallback into compat.

rest_framework/compat.py

@@ -12,7 +12,10 @@ from django.utils.six.moves.urllib.parse import urlparse as _urlparse
 from django.utils import six
 import django
 import inspect
-
+try:
+    import importlib
+except ImportError:
+    from django.utils import importlib
 
 def unicode_repr(instance):
     # Get the repr of an instance, but ensure it is a unicode string

rest_framework/settings.py

@@ -20,13 +20,9 @@ back to the defaults.
 from __future__ import unicode_literals
 from django.test.signals import setting_changed
 from django.conf import settings
-try:
-    import importlib
-except ImportError:
-    from django.utils import importlib
 from django.utils import six
 from rest_framework import ISO_8601
-
+from rest_framework.compat import importlib
 
 USER_SETTINGS = getattr(settings, 'REST_FRAMEWORK', None)