flake8 fixes

polymorphic/__init__.py

@@ -6,12 +6,13 @@ Copyright:
 This code and affiliated files are (C) by Bert Constantin and individual contributors.
 Please see LICENSE and AUTHORS for more information.
 """
+import django
+
 # See PEP 440 (https://www.python.org/dev/peps/pep-0440/)
 __version__ = "1.0.2"
 
 
 # Monkey-patch Django < 1.5 to allow ContentTypes for proxy models.
-import django
 if django.VERSION[:2] < (1, 5):
     from django.contrib.contenttypes.models import ContentTypeManager
     from django.utils.encoding import smart_text

polymorphic/admin/__init__.py

@@ -41,6 +41,7 @@ __all__ = (
     'PolymorphicInlineAdminFormSet',
     'PolymorphicInlineSupportMixin',
     'PolymorphicInlineModelAdmin',
+    'StackedPolymorphicInline',
     'GenericPolymorphicInlineModelAdmin',
     'GenericStackedPolymorphicInline',
 )

polymorphic/query.py

@@ -29,7 +29,7 @@ def transmogrify(cls, obj):
     """
     Upcast a class to a different type without asking questions.
     """
-    if not '__init__' in obj.__dict__:
+    if '__init__' not in obj.__dict__:
         # Just assign __class__ to a different value.
         new = obj
         new.__class__ = cls
@@ -317,7 +317,7 @@ class PolymorphicQuerySet(QuerySet):
             ordered_id_list.append(base_object.pk)
 
             # check if id of the result object occurres more than once - this can happen e.g. with base_objects.extra(tables=...)
-            if not base_object.pk in base_result_objects_by_id:
+            if base_object.pk not in base_result_objects_by_id:
                 base_result_objects_by_id[base_object.pk] = base_object
 
                 if base_object.polymorphic_ctype_id == self_model_class_id:

polymorphic/query_translate.py

@@ -6,6 +6,7 @@ from __future__ import absolute_import
 
 import copy
 import django
+from functools import reduce
 from django.db import models
 from django.contrib.contenttypes.models import ContentType
 from django.db.models import Q, FieldDoesNotExist
@@ -26,9 +27,6 @@ else:
     REL_FIELD_CLASSES = (RelatedField, ForeignObjectRel)
 
 
-from functools import reduce
-
-
 ###################################################################################
 # PolymorphicQuerySet support functions
 
@@ -128,7 +126,7 @@ def _translate_polymorphic_filter_definition(queryset_model, field_path, field_v
         return _create_model_filter_Q(field_val, using=using)
     elif field_path == 'not_instance_of':
         return _create_model_filter_Q(field_val, not_instance_of=True, using=using)
-    elif not '___' in field_path:
+    elif '___' not in field_path:
         return None  # no change
 
     # filter expression contains '___' (i.e. filter for polymorphic field)

polymorphic/showfields.py

@@ -136,7 +136,7 @@ class ShowFieldBase(object):
 
             if (self.polymorphic_showfield_max_line_width
                     and xpos + len(p) > self.polymorphic_showfield_max_line_width
-                    and possible_line_break_pos != None):
+                    and possible_line_break_pos is not None):
                 rest = out[possible_line_break_pos:]
                 out = out[:possible_line_break_pos]
                 out += '\n' + indentstr + rest

polymorphic/tests.py

@@ -6,17 +6,10 @@ from __future__ import print_function
 import uuid
 import re
 import django
-try:
-    from unittest import skipIf
-except ImportError:
-    # python<2.7
-    from django.utils.unittest import skipIf
 from django.db.models.query import QuerySet
 
 from django.test import TestCase
 from django.db.models import Q, Count
-if django.VERSION >= (1, 8):
-    from django.db.models import Case, When
 from django.db import models
 from django.contrib.contenttypes.models import ContentType
 from django.utils import six
@@ -26,6 +19,16 @@ from polymorphic.models import PolymorphicModel
 from polymorphic.managers import PolymorphicManager
 from polymorphic.query import PolymorphicQuerySet
 from polymorphic.showfields import ShowFieldContent, ShowFieldType, ShowFieldTypeAndContent
+
+try:
+    from unittest import skipIf
+except ImportError:
+    # python<2.7
+    from django.utils.unittest import skipIf
+
+if django.VERSION >= (1, 8):
+    from django.db.models import Case, When
+
 try:
     from django.db.models import UUIDField
 except ImportError: