[qa] Reordered imports and added isort check to build

.travis.yml

@@ -17,6 +17,7 @@ install:
 
 before_script:
   - ./runflake8
+  - ./runisort
 
 # command to run tests, e.g. python setup.py test
 script:

openwisp_network_topology/admin.py

@@ -1,11 +1,8 @@
 from django.contrib import admin
-from django_netjsongraph.base.admin import (AbstractLinkAdmin,
-                                            AbstractNodeAdmin,
-                                            AbstractTopologyAdmin)
+from django_netjsongraph.base.admin import AbstractLinkAdmin, AbstractNodeAdmin, AbstractTopologyAdmin
+
+from openwisp_utils.admin import MultitenantAdminMixin, MultitenantOrgFilter, MultitenantRelatedOrgFilter
 
-from openwisp_utils.admin import (MultitenantAdminMixin,
-                                  MultitenantRelatedOrgFilter,
-                                  MultitenantOrgFilter)
 from .models import Link, Node, Topology
 
 

openwisp_network_topology/api/views.py

@@ -1,5 +1,4 @@
-from django_netjsongraph.api.generics import (BaseNetworkCollectionView,
-                                              BaseNetworkGraphView,
+from django_netjsongraph.api.generics import (BaseNetworkCollectionView, BaseNetworkGraphView,
                                               BaseReceiveTopologyView)
 
 from ..models import Topology

openwisp_network_topology/models.py

@@ -1,8 +1,8 @@
 from django.db import models
-
 from django_netjsongraph.base.link import AbstractLink
 from django_netjsongraph.base.node import AbstractNode
 from django_netjsongraph.base.topology import AbstractTopology
+
 from openwisp_users.mixins import OrgMixin
 
 

openwisp_network_topology/visualizer/urls.py

@@ -1,4 +1,5 @@
 from django_netjsongraph.utils import get_visualizer_urls
+
 from . import views
 
 urlpatterns = get_visualizer_urls(views)

openwisp_network_topology/visualizer/views.py

@@ -1,5 +1,4 @@
-from django_netjsongraph.visualizer.generics import (BaseTopologyDetailView,
-                                                     BaseTopologyListView)
+from django_netjsongraph.visualizer.generics import BaseTopologyDetailView, BaseTopologyListView
 
 from ..models import Topology
 

setup.cfg

@@ -1,2 +1,9 @@
 [bdist_wheel]
 universal=1
+
+[isort]
+known_third_party = django,django_netjsongraph
+known_first_party = openwisp_users,openwisp_utils,openwisp_network_topology
+line_length=110
+default_section = THIRDPARTY
+skip = migrations