Code cleanup

app/api/processingnodes.py

@@ -1,14 +1,10 @@
-from rest_framework import serializers, viewsets
-from rest_framework.response import Response
-from rest_framework.decorators import permission_classes
-from rest_framework.permissions import DjangoModelPermissions
-from rest_framework.filters import DjangoFilterBackend
-from django_filters.rest_framework import FilterSet
-from nodeodm.models import ProcessingNode
 import django_filters
-from django.utils import timezone
-from datetime import timedelta
-from django.db.models import Q
+from django_filters.rest_framework import FilterSet
+from rest_framework import serializers, viewsets
+from rest_framework.filters import DjangoFilterBackend
+from rest_framework.permissions import DjangoModelPermissions
+
+from nodeodm.models import ProcessingNode
 
 
 class ProcessingNodeSerializer(serializers.ModelSerializer):
@@ -19,6 +15,7 @@ class ProcessingNodeSerializer(serializers.ModelSerializer):
 class ProcessingNodeFilter(FilterSet):
     has_available_options = django_filters.MethodFilter()
 
+    # noinspection PyMethodMayBeStatic
     def filter_has_available_options(self, queryset, value):
         if value.lower() in ['true', '1']:
             return queryset.exclude(available_options=dict())

app/api/projects.py

@@ -1,8 +1,9 @@
 from django.contrib.auth.models import User
 from rest_framework import serializers, viewsets
-from rest_framework.response import Response
+
 from app import models
-from .tasks import TaskIDsSerializer, TaskSerializer
+from .tasks import TaskIDsSerializer
+
 
 class ProjectSerializer(serializers.ModelSerializer):
     owner = serializers.PrimaryKeyRelatedField(queryset=User.objects.all())

app/api/tasks.py

@@ -1,11 +1,11 @@
-from django.contrib.auth.models import User
 from django.core.exceptions import ObjectDoesNotExist
 from rest_framework import status, serializers, viewsets, filters, exceptions, permissions, parsers
 from rest_framework.response import Response
-from rest_framework.decorators import parser_classes, api_view
+
 from app import models, scheduler
 from nodeodm.models import ProcessingNode
 
+
 class TaskIDsSerializer(serializers.BaseSerializer):
     def to_representation(self, obj):
         return obj.id
@@ -34,8 +34,9 @@ class TaskViewSet(viewsets.ViewSet):
     permission_classes = (permissions.DjangoModelPermissions, )
     parser_classes = (parsers.MultiPartParser, parsers.JSONParser, )
     ordering_fields = '__all__'
-    
-    def get_and_check_project(self, request, project_pk, perms = ('view_project', )):
+
+    @staticmethod
+    def get_and_check_project(request, project_pk, perms = ('view_project', )):
         '''
         Retrieves a project and raises an exeption if the current user
         has no access to it.
@@ -55,7 +56,7 @@ class TaskViewSet(viewsets.ViewSet):
         return '\n'.join(output.split('\n')[line_num:])
 
     def list(self, request, project_pk=None):
-        project = self.get_and_check_project(request, project_pk)
+        self.get_and_check_project(request, project_pk)
         tasks = self.queryset.filter(project=project_pk)
         tasks = filters.OrderingFilter().filter_queryset(self.request, tasks, self)
         serializer = TaskSerializer(tasks, many=True)
@@ -68,8 +69,6 @@ class TaskViewSet(viewsets.ViewSet):
         except ObjectDoesNotExist:
             raise exceptions.NotFound()
 
-        response_data = None
-
         if request.query_params.get('output_only', '').lower() in ['true', '1']:
             response_data = self.task_output_only(request, task)
         else:
@@ -88,13 +87,13 @@ class TaskViewSet(viewsets.ViewSet):
                     for file in filesList]
 
         task = models.Task.create_from_images(files, project)
-        if task != None:
+        if not task is None:
             return Response({"id": task.id}, status=status.HTTP_201_CREATED)
         else:
             raise exceptions.ValidationError(detail="Cannot create task, input provided is not valid.")
 
     def update(self, request, pk=None, project_pk=None, partial=False):
-        project = self.get_and_check_project(request, project_pk, ('change_project', ))
+        self.get_and_check_project(request, project_pk, ('change_project', ))
         try:
             task = self.queryset.get(pk=pk, project=project_pk)
         except ObjectDoesNotExist:

app/models.py

@@ -139,7 +139,7 @@ class Task(models.Model):
 
                 # TODO: log process has started processing
 
-            except ProcessingException, e:
+            except ProcessingException as e:
                 print("TASK ERROR: " + e.message)
 
         # Need to update status (first time, queued or running?)

app/tests/classes.py

@@ -1,7 +1,9 @@
+from django.contrib.auth.models import User
 from django.test import TestCase
-from django.contrib.auth.models import User, Group
-from app.models import Project
+
 from app.boot import boot
+from app.models import Project
+
 
 class BootTestCase(TestCase):
     '''

app/tests/test_app.py

@@ -129,7 +129,7 @@ class TestApp(BootTestCase):
 
         # Test options validation
         task.options = [{'name': 'test', 'value': 1}]
-        self.assertTrue(task.save() == None)
+        self.assertTrue(task.save() is None)
 
         task.options = {'test': 1}
         self.assertRaises(ValidationError, task.save)
@@ -139,12 +139,12 @@ class TestApp(BootTestCase):
 
 
     def test_scheduler(self):
-        self.assertTrue(scheduler.setup() == None)
+        self.assertTrue(scheduler.setup() is None)
 
         # Can call update_nodes_info()
-        self.assertTrue(scheduler.update_nodes_info() == None)
+        self.assertTrue(scheduler.update_nodes_info() is None)
 
         # Can call function in background
-        self.assertTrue(scheduler.update_nodes_info(background=True).join() == None)
+        self.assertTrue(scheduler.update_nodes_info(background=True).join() is None)
 
-        self.assertTrue(scheduler.teardown() == None)
+        self.assertTrue(scheduler.teardown() is None)