diff --git a/.idea/inspectionProfiles/Project_Default.xml b/.idea/inspectionProfiles/Project_Default.xml
index 9f03014..4526c6f 100644
--- a/.idea/inspectionProfiles/Project_Default.xml
+++ b/.idea/inspectionProfiles/Project_Default.xml
@@ -55,11 +55,6 @@
       </option>
     </inspection_tool>
     <inspection_tool class="PyShadowingNamesInspection" enabled="false" level="WEAK WARNING" enabled_by_default="false" />
-    <inspection_tool class="PyUnusedLocalInspection" enabled="false" level="WEAK WARNING" enabled_by_default="false">
-      <option name="ignoreTupleUnpacking" value="true" />
-      <option name="ignoreLambdaParameters" value="true" />
-      <option name="ignoreLoopIterationVariables" value="true" />
-    </inspection_tool>
     <inspection_tool class="SpellCheckingInspection" enabled="false" level="TYPO" enabled_by_default="false">
       <option name="processCode" value="true" />
       <option name="processLiterals" value="true" />
diff --git a/setup.py b/setup.py
index baa3de0..589a500 100755
--- a/setup.py
+++ b/setup.py
@@ -65,7 +65,9 @@ def drf_yasg_setup(**kwargs):
 
 
 try:
-    import setuptools_scm
+    # noinspection PyUnresolvedReferences
+    import setuptools_scm  # noqa: F401
+
     drf_yasg_setup(use_scm_version=True)
 except (ImportError, LookupError) as e:
     if os.getenv('CI', 'false') == 'true' or os.getenv('TRAVIS', 'false') == 'true':
diff --git a/src/drf_yasg/codecs.py b/src/drf_yasg/codecs.py
index 777abac..5644943 100644
--- a/src/drf_yasg/codecs.py
+++ b/src/drf_yasg/codecs.py
@@ -121,8 +121,7 @@ class SaneYamlDumper(yaml.SafeDumper):
         """
         return super(SaneYamlDumper, self).increase_indent(flow=flow, indentless=False, **kwargs)
 
-    @staticmethod
-    def represent_odict(dump, mapping, flow_style=None):  # pragma: no cover
+    def represent_odict(self, mapping, flow_style=None):  # pragma: no cover
         """https://gist.github.com/miracle2k/3184458
 
         Make PyYAML output an OrderedDict.
@@ -134,22 +133,22 @@ class SaneYamlDumper(yaml.SafeDumper):
         tag = YAML_MAP_TAG
         value = []
         node = yaml.MappingNode(tag, value, flow_style=flow_style)
-        if dump.alias_key is not None:
-            dump.represented_objects[dump.alias_key] = node
+        if self.alias_key is not None:
+            self.represented_objects[self.alias_key] = node
         best_style = True
         if hasattr(mapping, 'items'):
             mapping = mapping.items()
         for item_key, item_value in mapping:
-            node_key = dump.represent_data(item_key)
-            node_value = dump.represent_data(item_value)
+            node_key = self.represent_data(item_key)
+            node_value = self.represent_data(item_value)
             if not (isinstance(node_key, yaml.ScalarNode) and not node_key.style):
                 best_style = False
             if not (isinstance(node_value, yaml.ScalarNode) and not node_value.style):
                 best_style = False
             value.append((node_key, node_value))
         if flow_style is None:
-            if dump.default_flow_style is not None:
-                node.flow_style = dump.default_flow_style
+            if self.default_flow_style is not None:
+                node.flow_style = self.default_flow_style
             else:
                 node.flow_style = best_style
         return node
diff --git a/src/drf_yasg/utils.py b/src/drf_yasg/utils.py
index 44bbb67..2f7d35b 100644
--- a/src/drf_yasg/utils.py
+++ b/src/drf_yasg/utils.py
@@ -211,7 +211,7 @@ def is_list_view(path, method, view):
     """
     # for ViewSets, it could be the default 'list' action, or a list_route
     action = getattr(view, 'action', '')
-    method = getattr(view, action, None)
+    method = getattr(view, action, None) or method
     detail = getattr(method, 'detail', None)
     suffix = getattr(view, 'suffix', None)
     if action in ('list', 'create') or detail is False or suffix == 'List':
diff --git a/testproj/testproj/util.py b/testproj/testproj/util.py
index 6a7f127..8bf52f4 100644
--- a/testproj/testproj/util.py
+++ b/testproj/testproj/util.py
@@ -1,7 +1,4 @@
 from django.contrib.staticfiles.templatetags.staticfiles import static
-from django.urls import NoReverseMatch
-from django.utils.encoding import force_text
 from django.utils.functional import lazy
 
-
 static_lazy = lazy(static, str)