Added Flake8 lib and fixed PEP8 violations

opennebula_api/views.py

@@ -1,19 +1,11 @@
 from rest_framework import generics
 from rest_framework import permissions
 
-from django.contrib.auth.mixins import LoginRequiredMixin
-from django.contrib.auth import authenticate, login
-
-
-from utils.views import LoginViewMixin
-from membership.models import CustomUser, StripeCustomer
-from guardian.mixins import PermissionRequiredMixin
-
-from .serializers import VirtualMachineTemplateSerializer, \
-                         VirtualMachineSerializer
+from .serializers import VirtualMachineSerializer
 from .models import OpenNebulaManager
 from rest_framework.exceptions import APIException
 
+
 class ServiceUnavailable(APIException):
     status_code = 503
     default_detail = 'Service temporarily unavailable, try again later.'
@@ -29,7 +21,7 @@ class VmCreateView(generics.ListCreateAPIView):
         owner = self.request.user
         manager = OpenNebulaManager(email=owner.email,
                                     password=owner.password)
-        # We may have ConnectionRefusedError if we don't have a 
+        # We may have ConnectionRefusedError if we don't have a
         # connection to OpenNebula. For now, we raise ServiceUnavailable
         try:
             vms = manager.get_vms()
@@ -41,6 +33,7 @@ class VmCreateView(generics.ListCreateAPIView):
         """Save the post data when creating a new template."""
         serializer.save(owner=self.request.user)
 
+
 class VmDetailsView(generics.RetrieveUpdateDestroyAPIView):
     """This class handles the http GET, PUT and DELETE requests."""
     permission_classes = (permissions.IsAuthenticated, )
@@ -51,7 +44,7 @@ class VmDetailsView(generics.RetrieveUpdateDestroyAPIView):
         owner = self.request.user
         manager = OpenNebulaManager(email=owner.email,
                                     password=owner.password)
-        # We may have ConnectionRefusedError if we don't have a 
+        # We may have ConnectionRefusedError if we don't have a
         # connection to OpenNebula. For now, we raise ServiceUnavailable
         try:
             vms = manager.get_vms()
@@ -63,22 +56,21 @@ class VmDetailsView(generics.RetrieveUpdateDestroyAPIView):
         owner = self.request.user
         manager = OpenNebulaManager(email=owner.email,
                                     password=owner.password)
-        # We may have ConnectionRefusedError if we don't have a 
+        # We may have ConnectionRefusedError if we don't have a
         # connection to OpenNebula. For now, we raise ServiceUnavailable
         try:
             vm = manager.get_vm(self.kwargs.get('pk'))
         except ConnectionRefusedError:
             raise ServiceUnavailable
-        return vm                                    
+        return vm
 
     def perform_destroy(self, instance):
         owner = self.request.user
         manager = OpenNebulaManager(email=owner.email,
                                     password=owner.password)
-        # We may have ConnectionRefusedError if we don't have a 
+        # We may have ConnectionRefusedError if we don't have a
         # connection to OpenNebula. For now, we raise ServiceUnavailable
         try:
             manager.delete_vm(instance.id)
         except ConnectionRefusedError:
             raise ServiceUnavailable
-