pylint: Address no-else-continue/no-else-raise warnings

Change-Id: I1d44c1bf564cf02908113a42b98e06057e993ec7

.pylintrc

@@ -55,10 +55,6 @@ disable=
  duplicate-code,
  inconsistent-return-statements,  # TODO
  interface-not-implemented,
- # Better to be fixed but too many hits :(
- no-else-continue,  # TODO
- # Better to be fixed but too many hits :(
- no-else-raise,  # TODO
  no-else-return,
  no-self-use,
  # python3 way: Let's do it once we have a consensus.

horizon/base.py

@@ -187,7 +187,7 @@ class Registry(object):
         """
         if not inspect.isclass(cls):
             raise ValueError('Only classes may be registered.')
-        elif not issubclass(cls, self._registerable_class):
+        if not issubclass(cls, self._registerable_class):
             raise ValueError('Only %s classes or subclasses may be registered.'
                              % self._registerable_class.__name__)
 
@@ -233,7 +233,6 @@ class Registry(object):
                                    "slug": cls,
                                    "parent": parent,
                                    "name": self.slug})
-        else:
         slug = getattr(cls, "slug", cls)
         raise NotRegistered('%(type)s with slug "%(slug)s" is not '
                             'registered.' % {"type": class_name,
@@ -821,7 +820,6 @@ class Site(Registry, HorizonComponent):
             # If it's not callable and not a string, it's wrong.
             raise ValueError('The user_home setting must be either a string '
                              'or a callable object (e.g. a function).')
-        else:
         return self.get_absolute_url()
 
     def get_absolute_url(self):

horizon/tables/views.py

@@ -76,7 +76,6 @@ class MultiTableMixin(object):
             cls_name = self.__class__.__name__
             raise NotImplementedError("You must define a %s method "
                                       "in %s." % (func_name, cls_name))
-        else:
         return func
 
     def assign_type_string(self, data, type_name, data_type):

horizon/workflows/base.py

@@ -344,7 +344,7 @@ class Step(object):
                     # If it's callable we know the function exists and is valid
                     self._handlers[key].append(possible_handler)
                     continue
-                elif not isinstance(possible_handler, str):
+                if not isinstance(possible_handler, str):
                     raise TypeError("Connection handlers must be either "
                                     "callables or strings.")
                 bits = possible_handler.split(".")
@@ -789,7 +789,7 @@ class Workflow(html.HTMLElement, metaclass=WorkflowMetaclass):
         """Registers a :class:`~horizon.workflows.Step` with the workflow."""
         if not inspect.isclass(step_class):
             raise ValueError('Only classes may be registered.')
-        elif not issubclass(step_class, cls._registerable_class):
+        if not issubclass(step_class, cls._registerable_class):
             raise ValueError('Only %s classes or subclasses may be registered.'
                              % cls._registerable_class.__name__)
         if step_class in cls._cls_registry:
@@ -852,7 +852,7 @@ class Workflow(html.HTMLElement, metaclass=WorkflowMetaclass):
                 data = step.action.handle(self.request, self.context)
                 if data is True or data is None:
                     continue
-                elif data is False:
+                if data is False:
                     partial = True
                 else:
                     self.context = step.contribute(data or {}, self.context)

openstack_dashboard/dashboards/identity/domains/tables.py

@@ -117,7 +117,7 @@ class DeleteDomainsAction(tables.DeleteAction):
                 % domain.name
             messages.error(request, msg)
             raise keystoneclient_exceptions.ClientException(msg)
-        else:
+
         LOG.info('Deleting domain "%s".', obj_id)
         api.keystone.domain_delete(request, obj_id)
 

openstack_dashboard/dashboards/project/images/images/forms.py

@@ -246,10 +246,11 @@ class CreateImageForm(CreateParent):
         if not image_url and not image_file:
             msg = _("An image file or an external location must be specified.")
             if source_type == 'file':
-                raise ValidationError({'image_file': [msg, ]})
-            else:
-                raise ValidationError({'image_url': [msg, ]})
+                error_msg = {'image_file': [msg, ]}
             else:
+                error_msg = {'image_url': [msg, ]}
+            raise ValidationError(error_msg)
+
         return data
 
     def handle(self, request, data):

openstack_dashboard/dashboards/project/instances/workflows/create_instance.py

@@ -686,7 +686,7 @@ class CustomizeAction(workflows.Action):
             if upload_file._size > 16 * units.Ki:  # 16kb
                 msg = _('File exceeds maximum size (16kb)')
                 raise forms.ValidationError(msg)
-            else:
+
             script = upload_file.read()
             if script != "":
                 try:

openstack_dashboard/dashboards/project/vg_snapshots/views.py

@@ -140,10 +140,9 @@ class CreateGroupView(forms.ModalFormView):
                     usages['volumes']['quota']):
                 raise ValueError(_('Unable to create group due to '
                                    'exceeding volume quota limit.'))
-            else:
+
             context['numRequestedItems'] = num_volumes
             context['usages'] = usages
-
         except ValueError as e:
             exceptions.handle(self.request, e.message)
             return None

openstack_dashboard/dashboards/project/volume_groups/views.py

@@ -207,10 +207,9 @@ class CreateSnapshotView(forms.ModalFormView):
                     usages['snapshots']['quota']):
                 raise ValueError(_('Unable to create snapshots due to '
                                    'exceeding snapshot quota limit.'))
-            else:
+
             context['numRequestedItems'] = num_volumes
             context['usages'] = usages
-
         except ValueError as e:
             exceptions.handle(self.request, e.message)
             return None
@@ -251,10 +250,9 @@ class CloneGroupView(forms.ModalFormView):
                     usages['volumes']['quota']):
                 raise ValueError(_('Unable to create group due to '
                                    'exceeding volume quota limit.'))
-            else:
+
             context['numRequestedItems'] = num_volumes
             context['usages'] = usages
-
         except ValueError as e:
             exceptions.handle(self.request, e.message)
             return None

openstack_dashboard/dashboards/project/volumes/forms.py

@@ -420,7 +420,7 @@ class CreateForm(forms.SelfHandlingForm):
                 params = {'req': data['size'],
                           'avail': availableGB}
                 raise ValidationError(error_message % params)
-            elif availableVol <= 0:
+            if availableVol <= 0:
                 error_message = _('You are already using all of your available'
                                   ' volumes.')
                 raise ValidationError(error_message)