Added Django 1.9+ support

 from django.conf import settings
 from django.core import urlresolvers
 from django.core.exceptions import ImproperlyConfigured
-from django.utils.importlib import import_module
 
-from django_comments.models import Comment
-from django_comments.forms import CommentForm
+try:
+    from importlib import import_module
+except ImportError:
+    from django.utils.importlib import import_module
+
 
 DEFAULT_COMMENTS_APP = 'django_comments'
 
@@ -35,6 +37,7 @@ def get_comment_app_name():
     return getattr(settings, 'COMMENTS_APP', DEFAULT_COMMENTS_APP)
 
 def get_model():
+    from django_comments.models import Comment
     """
     Returns the comment model class.
     """
@@ -44,6 +47,7 @@ def get_model():
         return Comment
 
 def get_form():
+    from django_comments.forms import CommentForm
     """
     Returns the comment ModelForm class.
     """

 import time
 from django import forms
-from django.forms.util import ErrorDict
+
+try:
+    from django.forms.utils import ErrorDict
+except ImportError:
+    from django.forms.util import ErrorDict
+
 from django.conf import settings
 from django.contrib.contenttypes.models import ContentType
 from django.utils.crypto import salted_hmac, constant_time_compare

 from django.conf import settings
-from django.contrib.contenttypes import generic
+
+try:
+    from django.contrib.contenttypes.fields import GenericForeignKey
+except ImportError:
+    from django.contrib.contenttypes.generic import GenericForeignKey
+
 from django.contrib.contenttypes.models import ContentType
 from django.contrib.sites.models import Site
 from django.core import urlresolvers
@@ -24,7 +29,7 @@ class BaseCommentAbstractModel(models.Model):
             verbose_name=_('content type'),
             related_name="content_type_set_for_%(class)s")
     object_pk = models.TextField(_('object ID'))
-    content_object = generic.GenericForeignKey(ct_field="content_type", fk_field="object_pk")
+    content_object = GenericForeignKey(ct_field="content_type", fk_field="object_pk")
 
     # Metadata about the comment
     site = models.ForeignKey(Site)